Washington (State). Department of Ecology & Washington (State). Litter Control & Recycling Program. (1972). Litter, 1972: A summary of Washington State's Spring litter control campaign. State of Washington, Department of Ecology.
Chicago Style (17th ed.) CitationWashington (State). Department of Ecology and Washington (State). Litter Control & Recycling Program. Litter, 1972: A Summary of Washington State's Spring Litter Control Campaign. Olympia, Washington: State of Washington, Department of Ecology, 1972.
MLA (9th ed.) CitationWashington (State). Department of Ecology and Washington (State). Litter Control & Recycling Program. Litter, 1972: A Summary of Washington State's Spring Litter Control Campaign. State of Washington, Department of Ecology, 1972.
Warning: These citations may not always be 100% accurate.