Bonds of the authority may be issued as serial bonds, as term bonds, or as a combination of both types. All such bonds issued by the authority shall be payable solely from and secured by a pledge of revenues derived from or by reason of the ownership of student loan notes and investment income or as may be designated in a bond resolution authorized by the authority. Such bonds may be executed and delivered by the authority at any time and from time to time, may be in such form and denomination or denominations and of such terms and maturities, may be in fully registered form or in bearer form, registrable either as to principal or interest or both, may bear such conversion privileges, may be payable in such installment or installments and at such time or times not exceeding forty years from the date of the issuance thereof, may be payable at such place or places whether within or without the state of Missouri, may bear interest at such rate or rates per annum as determined by the authority without regard to section 108.170, may be made payable at such time or times and at such place or places, may be evidenced in such manner, may be executed by such officers of the authority, may have attached thereto, in the case of bearer bonds or bonds registrable as to principal only, interest coupons bearing the facsimile signature of the secretary of the authority, and may contain such provisions not inconsistent herewith, all as shall be provided in the bond resolution or resolutions of the authority whereunder the bonds shall be authorized to be issued. If deemed advisable by the authority, there may be retained in the bond resolution under which any bonds of the authority are authorized to be issued an option to call for redemption in advance of maturity all or any part of such bonds as may be specified in the bond resolution, at such price or prices, upon the giving of such notice or notices, and upon such terms and conditions as may be set forth in the bond resolution and as may be recited on the face of the bonds, but nothing in this section shall be construed to confer upon the authority the right or option to call for redemption in advance of maturity any bonds except as may be provided in the bond resolution under which they shall be issued. The bonds of the authority may be sold at public or private sale for such price, in such manner, and from time to time as may be determined by the authority notwithstanding the provisions of section 108.170, and the authority may pay all expenses, premiums, and commissions which it may deem necessary or advantageous in connection with the issuance thereof from the proceeds of the bonds. Other forms of indebtedness issued by the authority shall have such terms as may be provided in a bond resolution authorized by the authority. Any such indebtedness may bear interest at such rates and be sold in such manner as may be determined by the authority notwithstanding the provisions of section 108.170, and the authority may pay all expenses, premiums and commissions which it may deem necessary or advantageous in connection with the issuance thereof from proceeds therefrom or from other funds of the authority.