Cita APA

Tory Peterson, R. (1959). A field guide to the birds: Giving field marks of all species found east of the rockies. Boston, USA:: Houghton Mifflin Company,.

Citación estilo Chicago

Tory Peterson, R. A Field Guide to the Birds: Giving Field Marks of All Species Found East of the Rockies. Boston, USA:: Houghton Mifflin Company,, 1959.

Cita MLA

Tory Peterson, R. A Field Guide to the Birds: Giving Field Marks of All Species Found East of the Rockies. Boston, USA:: Houghton Mifflin Company,, 1959.