Não informado. (1963). English Teaching Forum. U.S. Information Agency.
Chicago (17e ed.) BronvermeldingNão informado. English Teaching Forum. Washington: U.S. Information Agency, 1963.
MLA (8e ed.) BronvermeldingNão informado. English Teaching Forum. U.S. Information Agency, 1963.
Let op: Deze citaties zijn niet altijd 100% accuraat.