Gaya APA

Krauskopf, K, B., Beiser, A. (2008). The Physical Universe (ed.12). Boston: Mc Graw-Hill.

Gaya MLA

Krauskopf, Konrad, B., Beiser, Arthur. "The Physical Universe". ed.12 Boston: Mc Graw-Hill, 2008. BUKU PENGAYAAN.