APA (7th ed.) Citation

British Museum (Natural History). Dept. of Mineralogy & Smith, G. F. H. (1937). A guide to the mineral gallery (14th ed.). Printed by order of the Trustees of the British Museum.

Chicago Style (17th ed.) Citation

British Museum (Natural History). Dept. of Mineralogy and George Frederick Herbert Smith. A Guide to the Mineral Gallery. 14th ed. London: Printed by order of the Trustees of the British Museum, 1937.

MLA (8th ed.) Citation

British Museum (Natural History). Dept. of Mineralogy and George Frederick Herbert Smith. A Guide to the Mineral Gallery. 14th ed. Printed by order of the Trustees of the British Museum, 1937.