APA (7th ed.) Citation

Ridge, M. (1993). Atlas of American frontiers. Rand McNally.

Chicago Style (17th ed.) Citation

Ridge, Martin. Atlas of American Frontiers. Chicago: Rand McNally, 1993.

MLA (8th ed.) Citation

Ridge, Martin. Atlas of American Frontiers. Rand McNally, 1993.

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