Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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