Corby, G. W. (1951). Geology and oil possibilities of the Philippines. Bureau of Print.
Chicago Style (17. basım) AtıfCorby, Grant W. Geology and Oil Possibilities of the Philippines. Manila: Bureau of Print, 1951.
MLA (9th ed.) AtıfCorby, Grant W. Geology and Oil Possibilities of the Philippines. Bureau of Print, 1951.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..