Gaya APA
GUPTA, R. (1981).
STATISTICAL QUALITY CONTROL (A TEXTBOOK OF ENGINEERING STUDENTS & PROFESSIONALS) .
Delhi:
Khanna Publishers.
Gaya MLA
GUPTA, R.C..
"STATISTICAL QUALITY CONTROL (A TEXTBOOK OF ENGINEERING STUDENTS & PROFESSIONALS)".
Delhi:
Khanna Publishers,
1981.
Textbook.