Não informado. (1976). TRANSACTIONS. Institute of British Geographers.
Chicago (17e ed.) BronvermeldingNão informado. TRANSACTIONS. London: Institute of British Geographers, 1976.
MLA (8e ed.) BronvermeldingNão informado. TRANSACTIONS. Institute of British Geographers, 1976.
Let op: Deze citaties zijn niet altijd 100% accuraat.