Gaya APA

A., Y, F. (1983). Training Report on Geotechnical Laboratory and Pit Slope Calculation Methods at Rheinbraun Consulting, GMBH, Cologne; West Germany 17-4-1983 - 9-7-1983 . : Direktorat Jendral Pertambangan Umum.

Gaya MLA

A., Yoesoef, Fatah. "Training Report on Geotechnical Laboratory and Pit Slope Calculation Methods at Rheinbraun Consulting, GMBH, Cologne; West Germany 17-4-1983 - 9-7-1983". : Direktorat Jendral Pertambangan Umum, 1983. Text.