APA (7th ed.) Citation

Grace, C. O., Bruchac, M. M., Brimberg, S., & Coulson, C. (2001). 1621: A new look at Thanksgiving. National Geographic Society.

Chicago Style (17th ed.) Citation

Grace, Catherine O'Neill, Margaret M. Bruchac, Sisse Brimberg, and Cotton Coulson. 1621: A New Look at Thanksgiving. Washington, D.C.: National Geographic Society, 2001.

MLA (8th ed.) Citation

Grace, Catherine O'Neill, et al. 1621: A New Look at Thanksgiving. National Geographic Society, 2001.

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