Williams, T., & Smith, N. (1982). 50 birds and mammals of Pennsylvania. [Pennsylvania Game Commission].
Chicago Style (17th ed.) CitationWilliams, Toni, and Ned Smith. 50 Birds and Mammals of Pennsylvania. [Harrisburg, PA]: [Pennsylvania Game Commission], 1982.
MLA (9th ed.) CitationWilliams, Toni, and Ned Smith. 50 Birds and Mammals of Pennsylvania. [Pennsylvania Game Commission], 1982.
Warning: These citations may not always be 100% accurate.