Popov, G. (1971). The Working of mineral deposits. Mir.
Cita Chicago (17th ed.)Popov, G. The Working of Mineral Deposits. Moscow: Mir, 1971.
Cita MLA (9th ed.)Popov, G. The Working of Mineral Deposits. Mir, 1971.
Atenció: Aquestes cites poden no estar 100% correctes.