APA

Hawkins A. S., U.S. Fish and Wildlife Service, . (1984). Flyways: pioneering waterfowl management in North America. Washington, D.C: Fish and Wildlife Service.

Chicago

Hawkins A S, U.S. Fish and Wildlife Service, . 1984. Flyways: pioneering waterfowl management in North America. Washington, D.C: Fish and Wildlife Service.

Harvard

Hawkins A. S., U.S. Fish and Wildlife Service, . (1984). Flyways: pioneering waterfowl management in North America. Washington, D.C: Fish and Wildlife Service.

MLA

Hawkins A S, U.S. Fish and Wildlife Service, . Flyways: pioneering waterfowl management in North America. Washington, D.C: Fish and Wildlife Service. 1984.