Gaya APA

KRAUSKOPF, K, ., Beiser, A. (1960). THE PHYSICAL UNIVERSE . United States of America: Mc GRAW - HILL BOOK COMPANY,INC.

Gaya MLA

KRAUSKOPF, KONRAD, ., Beiser, Arthur. "THE PHYSICAL UNIVERSE". United States of America: Mc GRAW - HILL BOOK COMPANY,INC, 1960. Text.