Παραπομπή APA

Bhatt, N. D., & John. (1977). Machine drawing. Charotar book stall.

Παραπομπή Chicago Style

Bhatt, N D., και John. Machine Drawing. India: Charotar book stall, 1977.

Παραπομπή MLA

Bhatt, N D., και John. Machine Drawing. Charotar book stall, 1977.