APA (7th ed.) Citation

Cook, A. D. (1928). German wool washing, wool combing, and worsted-yarn spinning industry in 1926. [publisher not identified].

Chicago Style (17th ed.) Citation

Cook, A. Douglas. German Wool Washing, Wool Combing, and Worsted-yarn Spinning Industry in 1926. Washington, D.C.: [publisher not identified], 1928.

MLA (9th ed.) Citation

Cook, A. Douglas. German Wool Washing, Wool Combing, and Worsted-yarn Spinning Industry in 1926. [publisher not identified], 1928.