Gaya APA

Haslan, H, S., B.C., A, L, C, C, M, E, V. (1975). A Plan To Increase The Annual Output of The Ombilin Coal Mines . : .

Gaya MLA

Haslan, H., S., B.C., Associates, Limited, Consulting, Coal, Mining, Engineers, Vancouver,. "A Plan To Increase The Annual Output of The Ombilin Coal Mines". : , 1975. Bukan Logam.