Gaya APA

Klees, M, E, C. (1957). The Coal Deposits From South-East Kalimantan And An Apparaisal Of Thei Mining And Quality Aspects . Bandung: Pusat Sumber Daya Geologi.

Gaya MLA

Klees, Mining, Eng., Ch.. "The Coal Deposits From South-East Kalimantan And An Apparaisal Of Thei Mining And Quality Aspects". Bandung: Pusat Sumber Daya Geologi, 1957. Batubara.