APA (7e ed.) Bronvermelding

Hetzel, W. C. (1984). The complete guide to software testing. QED Information Sciences.

Chicago (17e ed.) Bronvermelding

Hetzel, William C. The Complete Guide to Software Testing. Wellesley, Mass: QED Information Sciences, 1984.

MLA (9e ed.) Bronvermelding

Hetzel, William C. The Complete Guide to Software Testing. QED Information Sciences, 1984.