APA (7th ed.) Citation

Doerr, A. H., & Guernsey, J. L. (1976). Principles of geography: Physical and cultural (2.ed.). Barron's Educat.Series.

Chicago Style (17th ed.) Citation

Doerr, Arthur H., and James L. Guernsey. Principles of Geography: Physical and Cultural. 2.ed. Woodbury: Barron's Educat.Series, 1976.

MLA (9th ed.) Citation

Doerr, Arthur H., and James L. Guernsey. Principles of Geography: Physical and Cultural. 2.ed. Barron's Educat.Series, 1976.