Gaya APA

Co.,LTD, S, C, M., INC, W, S, I, ,. (1990). Contact For Gepfysical Wireling logging Service Contract NO . SCM 89-2 . Bandung: Sumitomo Coal Mining Co.,LTD , Well survey International , INC.

Gaya MLA

Co.,LTD, Sumitomo, Coal, Mining., INC, Well, Survey, International, ,. "Contact For Gepfysical Wireling logging Service Contract NO . SCM 89-2". Bandung: Sumitomo Coal Mining Co.,LTD , Well survey International , INC, 1990. Batubara.