Gaya APA

Krauskopf, K, B., Beiser, A. (2006). The physical universe (Eleventh edition). : The McGraw-Hill.New York.

Gaya MLA

Krauskopf, Konrad, B., Beiser, Arthur. "The physical universe". Eleventh edition : The McGraw-Hill.New York, 2006. Skripsi, Tesis, Disertasi.