Betz, C. E. (1963). Principles of penetrants. Magnaflux Corp..
Chicago Style (17th ed.) CitationBetz, Carl E. Principles of Penetrants. Chicago: Magnaflux Corp., 1963.
MLA (9th ed.) CitationBetz, Carl E. Principles of Penetrants. Magnaflux Corp., 1963.
Warning: These citations may not always be 100% accurate.