Clark , R. J., Kelso, L. H., & Smith, D. G. (1978). Working bibliography of Owls of the world: With summaries of current taxonomy and distributional status. Washington, D.C.: National Wildlife Federation.
Chicago Style CitationClark , Richard J., Leon H. Kelso, and Dwight G. Smith. Working Bibliography of Owls of the World: With Summaries of Current Taxonomy and Distributional Status. Washington, D.C.: National Wildlife Federation, 1978.
MLA CitationClark , Richard J., Leon H. Kelso, and Dwight G. Smith. Working Bibliography of Owls of the World: With Summaries of Current Taxonomy and Distributional Status. Washington, D.C.: National Wildlife Federation, 1978.
Warning: These citations may not always be 100% accurate.