Cita APA

Skutch, A. F. (1987). Helpers at birds' nests: A worldwide survey of cooperative breeding and related behavior (1. ed.). Iowa: University of Iowa Press.

Citación estilo Chicago

Skutch, Alexander Frank. Helpers At Birds' Nests: A Worldwide Survey of Cooperative Breeding and Related Behavior. 1. ed. Iowa: University of Iowa Press, 1987.

Cita MLA

Skutch, Alexander Frank. Helpers At Birds' Nests: A Worldwide Survey of Cooperative Breeding and Related Behavior. 1. ed. Iowa: University of Iowa Press, 1987.