Krauskopf, K. B., & Beiser, A. (1973). The physical universe (3rd ed.). McGraw-Hill.
Chicago Style aipamenaKrauskopf, Konrad Bates, and Arthur Beiser. The Physical Universe. 3rd ed. New York: McGraw-Hill, 1973.
MLA aipamenaKrauskopf, Konrad Bates, and Arthur Beiser. The Physical Universe. 3rd ed. McGraw-Hill, 1973.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.