Gaya APA

Craighead, J, J. (1963). A field guide to rocky mountain wildflowers : from northern Arizona and New mexico to British Columbia . Boston: Houghton Mifflin Company.

Gaya MLA

Craighead, John, J.. "A field guide to rocky mountain wildflowers : from northern Arizona and New mexico to British Columbia". Boston: Houghton Mifflin Company, 1963. Text.