APA

Krauskopf K. B., Beiser A., . (1973). The physical universe. New York: McGraw-Hill.

Chicago

Krauskopf Konrad Bates, Beiser Arthur, . 1973. The physical universe. New York: McGraw-Hill.

Harvard

Krauskopf K. B., Beiser A., . (1973). The physical universe. New York: McGraw-Hill.

MLA

Krauskopf Konrad Bates, Beiser Arthur, . The physical universe. New York: McGraw-Hill. 1973.