APA Citation

Fisher, R. M., & National Geographic Society. (1991). Heartland of a continent: America's plains and prairies. Washington: National Geographic Society.

Chicago Style Citation

Fisher, Ronald M., and National Geographic Society. Heartland of a Continent: America's Plains and Prairies. Washington: National Geographic Society, 1991.

MLA Citation

Fisher, Ronald M., and National Geographic Society. Heartland of a Continent: America's Plains and Prairies. Washington: National Geographic Society, 1991.

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