Goldman, M. I. (1980). The enigma of Soviet petroleum: Half-full or half-empty? Allen & Unwin.
Cita Chicago (17th ed.)Goldman, Marshall I. The Enigma of Soviet Petroleum: Half-full or Half-empty? London ; Boston: Allen & Unwin, 1980.
Cita MLA (8th ed.)Goldman, Marshall I. The Enigma of Soviet Petroleum: Half-full or Half-empty? Allen & Unwin, 1980.
Atenció: Aquestes cites poden no estar 100% correctes.