Merkoša sitáhtat

APA-čujuhus (7. p.)
Krauskopf, K. B., & Beiser, A. (1991). The physical universe (6th ed.). McGraw-Hill.
Chicago-čujuhus (17. p.)
Krauskopf, Konrad Bates, juo Arthur Beiser. The Physical Universe. 6th ed. New York: McGraw-Hill, 1991.
MLA-čujuhus (9. p.)
Krauskopf, Konrad Bates, juo Arthur Beiser. The Physical Universe. 6th ed. McGraw-Hill, 1991.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.