Krauskopf, K. B., & Beiser, A. (1997). The physical universe (8th ed.). WBC/McGraw-Hill.
Chicago Style aipamenaKrauskopf, Konrad B., and Arthur Beiser. The Physical Universe. 8th ed. Boston: WBC/McGraw-Hill, 1997.
MLA aipamenaKrauskopf, Konrad B., and Arthur Beiser. The Physical Universe. 8th ed. WBC/McGraw-Hill, 1997.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.