APA (7e ed.) Bronvermelding

Holden, J., & Edited by Holden, J. (2017). An Introduction to Physical Geography and the Environment (4th ed.). Pearson.

Chicago (17e ed.) Bronvermelding

Holden, Joseph, en Joseph Edited by Holden. An Introduction to Physical Geography and the Environment. 4th ed. London.: Pearson, 2017.

MLA (9e ed.) Bronvermelding

Holden, Joseph, en Joseph Edited by Holden. An Introduction to Physical Geography and the Environment. 4th ed. Pearson, 2017.