APA ציטוט

Hardwick, S. W., & Holtgrieve, D. G. (1990). Patterns on our planet: Concepts and themes in geography. Merrill.

Chicago Style (17th ed.) Citation

Hardwick, Susan Wiley, and Donald G. Holtgrieve. Patterns on Our Planet: Concepts and Themes in Geography. New York: Merrill, 1990.

ציטוט MLA

Hardwick, Susan Wiley, and Donald G. Holtgrieve. Patterns on Our Planet: Concepts and Themes in Geography. Merrill, 1990.