Corby, G. W. (1951). Geology and oil possibilities of the Philippines. Bureau of Print.
Chicago (17e ed.) BronvermeldingCorby, Grant W. Geology and Oil Possibilities of the Philippines. Manila: Bureau of Print, 1951.
MLA (9e ed.) BronvermeldingCorby, Grant W. Geology and Oil Possibilities of the Philippines. Bureau of Print, 1951.
Let op: Deze citaties zijn niet altijd 100% accuraat.