Cita APA

Hardwick, S. W., & Holtgrieve, D. G. (1996). Geography for educators: Standards, themes, and concepts ([2nd ed.].). Prentice Hall.

Citación estilo Chicago

Hardwick, Susan Wiley, and Donald G. Holtgrieve. Geography for Educators: Standards, Themes, and Concepts. [2nd ed.]. Upper Saddle River, N.J: Prentice Hall, 1996.

Cita MLA

Hardwick, Susan Wiley, and Donald G. Holtgrieve. Geography for Educators: Standards, Themes, and Concepts. [2nd ed.]. Prentice Hall, 1996.