APA (7th ed.) Citation

Peterson, R. T. (1961). A field guide to western birds: Field marks of all species found in North America west of the 100th meridian, with a section on the birds of the Hawaiian Islands (2d ed., rev. and enl.). Houghton Mifflin.

Chicago Style (17th ed.) Citation

Peterson, Roger Tory. A Field Guide to Western Birds: Field Marks of All Species Found in North America West of the 100th Meridian, with a Section on the Birds of the Hawaiian Islands. 2d ed., rev. and enl. Boston: Houghton Mifflin, 1961.

MLA (8th ed.) Citation

Peterson, Roger Tory. A Field Guide to Western Birds: Field Marks of All Species Found in North America West of the 100th Meridian, with a Section on the Birds of the Hawaiian Islands. 2d ed., rev. and enl. Houghton Mifflin, 1961.