APA (7e ed.) Bronvermelding

Davis, W. M., & Johnson, D. W. (1909). Geographical essays. Ginn and company.

Chicago (17e ed.) Bronvermelding

Davis, William Morris, en Douglas Wilson Johnson. Geographical Essays. Boston, New York: Ginn and company, 1909.

MLA (8e ed.) Bronvermelding

Davis, William Morris, en Douglas Wilson Johnson. Geographical Essays. Ginn and company, 1909.