Pennsylvania State University. Cooperative Extension Service. (1976). Circular. Pennsylvania State University, Cooperative Extension Service.
Chicago Style (17th ed.) CitationPennsylvania State University. Cooperative Extension Service. Circular. University Park, Pennsylvania: Pennsylvania State University, Cooperative Extension Service, 1976.
MLA (9th ed.) CitationPennsylvania State University. Cooperative Extension Service. Circular. Pennsylvania State University, Cooperative Extension Service, 1976.
Warning: These citations may not always be 100% accurate.