APA (7th ed.) Citation

Proudfoot, W. B. (1972). The origin of stencil duplicating. Hutchinson.

Chicago Style (17th ed.) Citation

Proudfoot, W. B. The Origin of Stencil Duplicating. London: Hutchinson, 1972.

MLA (9th ed.) Citation

Proudfoot, W. B. The Origin of Stencil Duplicating. Hutchinson, 1972.

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