APA (7th ed.) Citation

Kellaway, G. A., & Welch, F. B. A. (1993). Geology of the Bristol district : memoir for 1:63 360 geological special sheet (England and Wales) / G.A. Kellaway and F.B.A. Welch: Memoir for 1:63 360 geological special sheet (England and Wales). HMSO.

Chicago Style (17th ed.) Citation

Kellaway, G. A., and F. B. A. Welch. Geology of the Bristol District : Memoir for 1:63 360 Geological Special Sheet (England and Wales) / G.A. Kellaway and F.B.A. Welch: Memoir for 1:63 360 Geological Special Sheet (England and Wales). London: HMSO, 1993.

MLA (9th ed.) Citation

Kellaway, G. A., and F. B. A. Welch. Geology of the Bristol District : Memoir for 1:63 360 Geological Special Sheet (England and Wales) / G.A. Kellaway and F.B.A. Welch: Memoir for 1:63 360 Geological Special Sheet (England and Wales). HMSO, 1993.

Warning: These citations may not always be 100% accurate.