APA (7th ed.) Citation

Roys, R. L. (1957). The political geography of the Yucatan Maya. Carnegie Institution of Washington.

Chicago Style (17th ed.) Citation

Roys, Ralph Loveland. The Political Geography of the Yucatan Maya. Washington: Carnegie Institution of Washington, 1957.

MLA (9th ed.) Citation

Roys, Ralph Loveland. The Political Geography of the Yucatan Maya. Carnegie Institution of Washington, 1957.

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