2023 Washington Code 82.32.520 – Sourcing of calls

2022 Washington Code 82.32.520 – Sourcing of calls

2020 Washington Code 82.32.520 – Sourcing of calls

2019 Washington Code 82.32.520

2018 Washington Code 82.32.520 – Sourcing of calls

2016 Washington Code 82.32.520 – Sourcing of calls

2015 Washington Code 82.32.520 – Sourcing of calls

2014 Washington Code 82.32.520 – Sourcing of calls

2013 Washington Code 82.32.520 – Sourcing of calls

2009 Washington Code 82.32.520 – Sourcing of calls