Gaya APA

Marjono, . et al (1963). GEOLOGY AND BAUXITE DEPOSITS of the CENTRAL RIAU ISLANDS INDONESIA . : Geological Survey Of Indonesia.

Gaya MLA

Marjono, . et al. "GEOLOGY AND BAUXITE DEPOSITS of the CENTRAL RIAU ISLANDS INDONESIA". : Geological Survey Of Indonesia, 1963. Logam.