APA (7th ed.) Citation

Willoughby, G. A., & Lappinen, M. (1943). Elements of shop drawing. Bruce Publishing Company.

Chicago Style (17th ed.) Citation

Willoughby, George Alonzo, and Matt Lappinen. Elements of Shop Drawing. Milwaukee: Bruce Publishing Company, 1943.

MLA (9th ed.) Citation

Willoughby, George Alonzo, and Matt Lappinen. Elements of Shop Drawing. Bruce Publishing Company, 1943.