APA (7e ed.) Bronvermelding

Krauskopf, K. B., & Beiser, A. (1997). The physical universe (8th ed.). WBC/McGraw-Hill.

Chicago (17e ed.) Bronvermelding

Krauskopf, Konrad B., en Arthur Beiser. The Physical Universe. 8th ed. Boston: WBC/McGraw-Hill, 1997.

MLA (9e ed.) Bronvermelding

Krauskopf, Konrad B., en Arthur Beiser. The Physical Universe. 8th ed. WBC/McGraw-Hill, 1997.