APA (7e ed.) Bronvermelding

Não informado. (1839). Memoirs of the Geological Survey of the United Kingdon. Institute of Geological Sciences.

Chicago (17e ed.) Bronvermelding

Não informado. Memoirs of the Geological Survey of the United Kingdon. London: Institute of Geological Sciences, 1839.

MLA (8e ed.) Bronvermelding

Não informado. Memoirs of the Geological Survey of the United Kingdon. Institute of Geological Sciences, 1839.

Let op: Deze citaties zijn niet altijd 100% accuraat.