Gaya APA
Leeuwen, T, M, V., Pieters, P, E.
(2012).
Mineral deposits of Sulawesi
.
Bandung:
Badan Geologi..
Gaya MLA
Leeuwen, Theo, M., Van., Pieters, Peter, E.
"Mineral deposits of Sulawesi".
Bandung:
Badan Geologi.,
2012.
Textbook.