Παραπομπή APA

Gupta, R. (1988). Statistical quality control (3rd ed.). Khanna Publishers.

Παραπομπή Chicago Style

Gupta, R.C. Statistical Quality Control. 3rd ed. Delhi: Khanna Publishers, 1988.

Παραπομπή MLA

Gupta, R.C. Statistical Quality Control. 3rd ed. Khanna Publishers, 1988.