SWANA's International Solid Waste Exposition Portland, Oregon, & Solid Waste Association of North America. (1996). Proceedings from WESTECON 1996: SWANA's 34th Annual International Solid Waste Exposition, Portland, Oregon, September 23-26, 1996. Solid Waste Association of North America.
Παραπομπή σε μορφή Chicago (17η εκδ.)SWANA's International Solid Waste Exposition Portland, Oregon, και Solid Waste Association of North America. Proceedings from WESTECON 1996: SWANA's 34th Annual International Solid Waste Exposition, Portland, Oregon, September 23-26, 1996. Silver Spring: Solid Waste Association of North America, 1996.
Παραπομπή σε μορφή MLA (9th εκδ.)SWANA's International Solid Waste Exposition Portland, Oregon, και Solid Waste Association of North America. Proceedings from WESTECON 1996: SWANA's 34th Annual International Solid Waste Exposition, Portland, Oregon, September 23-26, 1996. Solid Waste Association of North America, 1996.