APA-referens (7:e uppl.)

Mcknight, T. L. (1990). Physical geography: A landscape appreciation (3rd ed.). Prentice-Hall.

Chicago-referens (17:e uppl.)

Mcknight, Tom L. Physical Geography: A Landscape Appreciation. 3rd ed. Englewood Cliffs, N.J: Prentice-Hall, 1990.

MLA-referens (9:e uppl.)

Mcknight, Tom L. Physical Geography: A Landscape Appreciation. 3rd ed. Prentice-Hall, 1990.