एपीए उद्धरण

Bhatt, N. D. (1992). Geometrical and machine drawing. Charotar publishing house.

शिकागो स्टाइल उद्धरण

Bhatt, N D. Geometrical and Machine Drawing. India: Charotar publishing house, 1992.

एमएलए उद्धरण

Bhatt, N D. Geometrical and Machine Drawing. Charotar publishing house, 1992.