Παραπομπή APA

Bhatt, N. D. (1980). Elementary engineering drawing (16.). Charotar publishing house.

Παραπομπή Chicago Style

Bhatt, N D. Elementary Engineering Drawing. 16. Anand: Charotar publishing house, 1980.

Παραπομπή MLA

Bhatt, N D. Elementary Engineering Drawing. 16. Charotar publishing house, 1980.