APA (7th ed.) Citation

National Wildlife Federation & Williams, M. M. (1949). My land and your land conservation series (Revised edition.). National Wildlife Federation.

Chicago Style (17th ed.) Citation

National Wildlife Federation and Mary Melrose Williams. My Land and Your Land Conservation Series. Revised edition. [Washington, D.C.]: National Wildlife Federation, 1949.

MLA (9th ed.) Citation

National Wildlife Federation and Mary Melrose Williams. My Land and Your Land Conservation Series. Revised edition. National Wildlife Federation, 1949.