APA aipamena

R B Gupta. (1992). Text book of machine drawing. new Delhi.

Chicago Style aipamena

R B Gupta. Text Book of Machine Drawing. new Delhi, 1992.

MLA aipamena

R B Gupta. Text Book of Machine Drawing. new Delhi, 1992.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.