APA (7e ed.) Bronvermelding

Keats, J. (1996). Understanding maps (2nd ed.). Longman.

Chicago (17e ed.) Bronvermelding

Keats, J.S. Understanding Maps. 2nd ed. London: Longman, 1996.

MLA (9e ed.) Bronvermelding

Keats, J.S. Understanding Maps. 2nd ed. Longman, 1996.