APA Style
Walker, D.A., Young, R. J.. (1987).
Quarterly Report on Exploration KP 289, Kotamobagu, Sulawesi Utara: 2nd Quarter 1987 .
Lanut:
Placer Development Indonesia.
Chicago Style
Walker, D.A., Young, R. J..
Quarterly Report on Exploration KP 289, Kotamobagu, Sulawesi Utara: 2nd Quarter 1987.
Lanut:
Placer Development Indonesia,
1987.
Text.
MLA Style
Walker, D.A., Young, R. J..
Quarterly Report on Exploration KP 289, Kotamobagu, Sulawesi Utara: 2nd Quarter 1987.
Lanut:
Placer Development Indonesia,
1987.
Text.
Turabian Style
Walker, D.A., Young, R. J..
Quarterly Report on Exploration KP 289, Kotamobagu, Sulawesi Utara: 2nd Quarter 1987.
Lanut:
Placer Development Indonesia,
1987.
Print.