Singh, D. B. (1970). The problem of world reserves. World Press.
Chicago Style (17th ed.) CitationSingh, David Bright. The Problem of World Reserves. Calcutta: World Press, 1970.
Cita MLASingh, David Bright. The Problem of World Reserves. World Press, 1970.
Atenció: Aquestes cites poden no estar 100% correctes.