APA (7th ed.) Citation

Twyford, H. B. (1919). Purchasing and storing. Industrial Extension Institute.

Chicago Style (17th ed.) Citation

Twyford, H. B. Purchasing and Storing. New York: Industrial Extension Institute, 1919.

MLA (9th ed.) Citation

Twyford, H. B. Purchasing and Storing. Industrial Extension Institute, 1919.