APA (7e ed.) Bronvermelding

Clark, S. P. (1971). Structure of the earth. Prentice-Hall.

Chicago (17e ed.) Bronvermelding

Clark, Sydney P. Structure of the Earth. Englewood Cliffs, N.J.: Prentice-Hall, 1971.

MLA (9e ed.) Bronvermelding

Clark, Sydney P. Structure of the Earth. Prentice-Hall, 1971.