APA

Hanners L. A., Kinkel L. K. & Clapp B. B. (1991). Colonial waterbird information service. Washington: Fish and Wildlife Service.

Chicago

Hanners Lise A, Kinkel Linda K and Clapp Boger B. 1991. Colonial waterbird information service. Washington: Fish and Wildlife Service.

Harvard

Hanners L. A., Kinkel L. K. and Clapp B. B. (1991). Colonial waterbird information service. Washington: Fish and Wildlife Service.

MLA

Hanners Lise A, Kinkel Linda K and Clapp Boger B. Colonial waterbird information service. Washington: Fish and Wildlife Service. 1991.