A study of factors concerned in the production of clean milk /
by Edith G. Knight, Kathleen Freear and R. Stenhouse Williams.

APA Citation

Knight, E. G., Williams, R. Stenhouse., Freear, K. (1920). A study of factors concerned in the production of clean milk. London: P.S. King & Son.

MLA Citation

Knight, Edith G, R. Stenhouse Williams, and Kathleen Freear. A Study of Factors Concerned In the Production of Clean Milk. London: P.S. King & Son, 1920.

Warning: These citations may not always be complete (especially for serials).