Cita APA

Skutch, A. F. (1989). Birds asleep (1. ed.). Texas: University of Texas Press.

Citación estilo Chicago

Skutch, Alexander Frank. Birds Asleep. 1. ed. Texas: University of Texas Press, 1989.

Cita MLA

Skutch, Alexander Frank. Birds Asleep. 1. ed. Texas: University of Texas Press, 1989.