APA (7th ed.) Citation

Wells, A. K. (1938). Outline of historical geology. Allen & Unwin.

Chicago Style (17th ed.) Citation

Wells, A. K. Outline of Historical Geology. London: Allen & Unwin, 1938.

MLA (8th ed.) Citation

Wells, A. K. Outline of Historical Geology. Allen & Unwin, 1938.

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