APA (7th ed.) Citation

Childs, O. E., & Beebe, B. W. (1963). Backbone of the Americas: Tectonic history from pole to pole. American Association of Petroleum Geologists.

Chicago Style (17th ed.) Citation

Childs, Orlo E., and B. Warren Beebe. Backbone of the Americas: Tectonic History from Pole to Pole. Tulsa, Okla.: American Association of Petroleum Geologists, 1963.

MLA (9th ed.) Citation

Childs, Orlo E., and B. Warren Beebe. Backbone of the Americas: Tectonic History from Pole to Pole. American Association of Petroleum Geologists, 1963.