APA

International Symposium of the Colonial Waterbird Group and the Pacific Seabird Group, Hand J. L., Southern W. E. & Vermeer K.Ecology and behavior of gulls. : .

Chicago

International Symposium of the Colonial Waterbird Group and the Pacific Seabird Group, Hand Judith Latta, Southern William E and Vermeer Kees.Ecology and behavior of gulls. : .

Harvard

International Symposium of the Colonial Waterbird Group and the Pacific Seabird Group, Hand J. L., Southern W. E. and Vermeer K.Ecology and behavior of gulls. : .

MLA

International Symposium of the Colonial Waterbird Group and the Pacific Seabird Group, Hand Judith Latta, Southern William E and Vermeer Kees.: . .