APA (7th ed.) Citation

Lock, C. B. M. (1969). Modern maps and atlases : an outline guide to twentieth century production / C.B. Muriel Lock: An outline guide to twentieth century production. Bingley.

Chicago Style (17th ed.) Citation

Lock, Clara Beatrice Muriel. Modern Maps and Atlases : An Outline Guide to Twentieth Century Production / C.B. Muriel Lock: An Outline Guide to Twentieth Century Production. London: Bingley, 1969.

MLA (9th ed.) Citation

Lock, Clara Beatrice Muriel. Modern Maps and Atlases : An Outline Guide to Twentieth Century Production / C.B. Muriel Lock: An Outline Guide to Twentieth Century Production. Bingley, 1969.

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