APA (7th ed.) Citation

Caplen, R. (1991). A practical approach to quality control (5th ed.). Business Books.

Chicago Style (17th ed.) Citation

Caplen, Rowland. A Practical Approach to Quality Control. 5th ed. London [etc.]: Business Books, 1991.

MLA (9th ed.) Citation

Caplen, Rowland. A Practical Approach to Quality Control. 5th ed. Business Books, 1991.