Biospherics Incorporated & Roth, S. (1981). Educational products for the exceptional child: A catalog of products funded by the Bureau of Education for the Handicapped. Oryx Press.
Chicago Style (17th ed.) CitationBiospherics Incorporated and Shellie Roth. Educational Products for the Exceptional Child: A Catalog of Products Funded by the Bureau of Education for the Handicapped. Phoenix, AZ: Oryx Press, 1981.
MLA (9th ed.) CitationBiospherics Incorporated and Shellie Roth. Educational Products for the Exceptional Child: A Catalog of Products Funded by the Bureau of Education for the Handicapped. Oryx Press, 1981.
Warning: These citations may not always be 100% accurate.