APA (7th ed.) Citation

Olson, S. L. (1977). A lower eocene frigatebird from the Green River formation of Wyoming (Pelecaniformes: Fregatidae). Smithsonian Institution Pr.

Chicago Style (17th ed.) Citation

Olson, Storrs L. A Lower Eocene Frigatebird from the Green River Formation of Wyoming (Pelecaniformes: Fregatidae). Washington, DC: Smithsonian Institution Pr, 1977.

MLA (9th ed.) Citation

Olson, Storrs L. A Lower Eocene Frigatebird from the Green River Formation of Wyoming (Pelecaniformes: Fregatidae). Smithsonian Institution Pr, 1977.

Warning: These citations may not always be 100% accurate.