Geological Society of London. Geological Information Group. (1978). Geological directory of the British Isles: A guide to information sources. [The Society].
Style de citation Chicago (17e éd.)Geological Society of London. Geological Information Group. Geological Directory of the British Isles: A Guide to Information Sources. [London]: [The Society], 1978.
Style de citation MLA (8e éd.)Geological Society of London. Geological Information Group. Geological Directory of the British Isles: A Guide to Information Sources. [The Society], 1978.
Attention : ces citations peuvent ne pas être correctes à 100%.