Παραπομπή APA

Narayana, K. L., & Kannaiah, P. (1988). Engineering graphics. Tata Mc Graw - Hill.

Παραπομπή Chicago Style

Narayana, K L., και P. Kannaiah. Engineering Graphics. New Delhi: Tata Mc Graw - Hill, 1988.

Παραπομπή MLA

Narayana, K L., και P. Kannaiah. Engineering Graphics. Tata Mc Graw - Hill, 1988.