Não informado. (1961). Gulf Research Reports. Gulf Coast Research Laboratory.
Chicago (17e ed.) BronvermeldingNão informado. Gulf Research Reports. Ocean Springs, Miss: Gulf Coast Research Laboratory, 1961.
MLA (8e ed.) BronvermeldingNão informado. Gulf Research Reports. Gulf Coast Research Laboratory, 1961.
Let op: Deze citaties zijn niet altijd 100% accuraat.