APA-viite (7. p.)

Joseph J. Hobbs. (2017). Fundamental of World Regional Geography (4th ed.). Cengage.

Chicago-viite (17. p.)

Joseph J. Hobbs. Fundamental of World Regional Geography. 4th ed. Singapore: Cengage, 2017.

MLA-viite (9. p.)

Joseph J. Hobbs. Fundamental of World Regional Geography. 4th ed. Cengage, 2017.