APA (7th ed.) Citation

Sidders, P. A., & Allen, C. E. (1972). Guide to world screw threads (1st American ed.). Industrial Press.

Chicago Style (17th ed.) Citation

Sidders, P. A., and C. Edgar Allen. Guide to World Screw Threads. 1st American ed. New York: Industrial Press, 1972.

MLA (9th ed.) Citation

Sidders, P. A., and C. Edgar Allen. Guide to World Screw Threads. 1st American ed. Industrial Press, 1972.