APA (7e ed.) Bronvermelding

Greenland, D. (1977). The earth in profile: A physical geography. Confield.

Chicago (17e ed.) Bronvermelding

Greenland, David. The Earth in Profile: A Physical Geography. San Francisco: Confield, 1977.

MLA (9e ed.) Bronvermelding

Greenland, David. The Earth in Profile: A Physical Geography. Confield, 1977.