Versions of Iowa Code 423.15 - General sourcing rules on LawServer 2023 Iowa Code 423.15 – General sourcing rules 2022 Iowa Code 423.15 – General sourcing rules 2020 Iowa Code 423.15 – General sourcing rules 2018 Iowa Code 423.15 – General sourcing rules 2016 Iowa Code 423.15 – General sourcing rules 2014 Iowa Code 423.15 – General sourcing rules. 2009 Iowa Code 423.15 – General sourcing rules