University of Bristol. (1972). The Severn estuary and the Bristol channel: An assessment of present knowledge. Natural Environment Research Council.
Chicago (17e ed.) BronvermeldingUniversity of Bristol. The Severn Estuary and the Bristol Channel: An Assessment of Present Knowledge. [London]: Natural Environment Research Council, 1972.
MLA (8e ed.) BronvermeldingUniversity of Bristol. The Severn Estuary and the Bristol Channel: An Assessment of Present Knowledge. Natural Environment Research Council, 1972.
Let op: Deze citaties zijn niet altijd 100% accuraat.