APA (7th ed.) Citation

Custer, T. W., & Osborn, R. G. (1977). Wading birds as biological indicators: 1975 colony survey. Dept. of the Interior, Fish and Wildlife Service.

Chicago Style (17th ed.) Citation

Custer, Thomas W., and Ronald G. Osborn. Wading Birds as Biological Indicators: 1975 Colony Survey. Washington: Dept. of the Interior, Fish and Wildlife Service, 1977.

MLA (9th ed.) Citation

Custer, Thomas W., and Ronald G. Osborn. Wading Birds as Biological Indicators: 1975 Colony Survey. Dept. of the Interior, Fish and Wildlife Service, 1977.