APA (7th ed.) Citation

Berle, A. K., & De Camp, L. S. (1947). Inventions and their management (2d ed.). International Textbook Co..

Chicago Style (17th ed.) Citation

Berle, Alf K., and L. Sprague De Camp. Inventions and Their Management. 2d ed. Scranton: International Textbook Co., 1947.

MLA (9th ed.) Citation

Berle, Alf K., and L. Sprague De Camp. Inventions and Their Management. 2d ed. International Textbook Co., 1947.