APA (7th ed.) Citation

(1981). Geology of the country around Penrith: Memoir for 1 : 50 000 geological sheet 24. HMSO.

Chicago Style (17th ed.) Citation

Geology of the Country Around Penrith: Memoir for 1 : 50 000 Geological Sheet 24. London: HMSO, 1981.

MLA (9th ed.) Citation

Geology of the Country Around Penrith: Memoir for 1 : 50 000 Geological Sheet 24. HMSO, 1981.

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