Cita APA

Still, B. L. (1990). Another field guide to little known & seldom- seen birds of North América. Atlanta: Peachtree Publishers.

Citación estilo Chicago

Still, Ben L. Another Field Guide to Little Known & Seldom- Seen Birds of North América. Atlanta: Peachtree Publishers, 1990.

Cita MLA

Still, Ben L. Another Field Guide to Little Known & Seldom- Seen Birds of North América. Atlanta: Peachtree Publishers, 1990.