APA-viite (7. p.)

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

Chicago-viite (17. p.)

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

MLA-viite (9. p.)

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