Gaya APA

H.Malissa, D, .. (1957). Report On the Chemici-analytc Coal Investigation Carried out in indonesian . Canada: John Wiley & Sons. Inc.

Gaya MLA

H.Malissa, DR.Techn.dipl.-ing, .. "Report On the Chemici-analytc Coal Investigation Carried out in indonesian". Canada: John Wiley & Sons. Inc, 1957. Batubara.