Cita APA (7th ed.)
Carey Steven D. & Beiser, A. (2000). The physical universe (9th ed.). McGraw-Hill.
Cita Chicago (17th ed.)
Carey Steven D. i Arthur Beiser. The Physical Universe. 9th ed. Boston: McGraw-Hill, 2000.
Cita MLA (9th ed.)
Carey Steven D. i Arthur Beiser. The Physical Universe. 9th ed. McGraw-Hill, 2000.
Atenció: Aquestes cites poden no estar 100% correctes.