Gamow, G. (1990). <As >aventuras do Sr. Tompkins. Gradiva.
Chicago Style (17th ed.) CitationGamow, George. <As >aventuras Do Sr. Tompkins. Gradiva, 1990.
Cita MLAGamow, George. <As >aventuras Do Sr. Tompkins. Gradiva, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.