Cita APA (7a ed.)

Krauskopf, K., & Beiser, A. (1960). The physical universe. McGraw-Hill.

Cita Chicago Style (17a ed.)

Krauskopf, Konrad, y Arthur Beiser. The Physical Universe. New York: McGraw-Hill, 1960.

Cita MLA (8a ed.)

Krauskopf, Konrad, y Arthur Beiser. The Physical Universe. McGraw-Hill, 1960.