(1930). Vol. 25, № 3, 5, 6; Economic Geology. 1930.
Cita Chicago (17th ed.)Vol. 25, № 3, 5, 6; Economic Geology. 1930, 1930.
Cita MLA (9th ed.)Vol. 25, № 3, 5, 6; Economic Geology. 1930, 1930.
Atenció: Aquestes cites poden no estar 100% correctes.
Cita APA (7th ed.)