Não informado. Nation's Schools & Colleges. McGraw-Hill.
Chicago (17e ed.) BronvermeldingNão informado. Nation's Schools & Colleges. Chicago, Ill: McGraw-Hill.
MLA (8e ed.) BronvermeldingNão informado. Nation's Schools & Colleges. McGraw-Hill.
Let op: Deze citaties zijn niet altijd 100% accuraat.