Cita APA

Skutch, A. F., & Gardner, D. (1981). New studies of tropical american birds. Cambridge: Nuttal Ornithological Club.

Citación estilo Chicago

Skutch, Alexander Frank, y Dana Gardner. New Studies of Tropical American Birds. Cambridge: Nuttal Ornithological Club, 1981.

Cita MLA

Skutch, Alexander Frank, y Dana Gardner. New Studies of Tropical American Birds. Cambridge: Nuttal Ornithological Club, 1981.