APA (7th ed.) Citation

Betz, C. E. (1969). Principles of penetrants (2nd ed.). Magnaflux Corp..

Chicago Style (17th ed.) Citation

Betz, Carl E. Principles of Penetrants. 2nd ed. Chicago, Ill.: Magnaflux Corp., 1969.

MLA (8th ed.) Citation

Betz, Carl E. Principles of Penetrants. 2nd ed. Magnaflux Corp., 1969.