Παραπομπή APA

Ravindran Nair, R., & George Philip, C. (1970). Mechanical engineering. State Institute of Languages.

Παραπομπή Chicago Style

Ravindran Nair, R., και C. George Philip. Mechanical Engineering. Trivandrum: State Institute of Languages, 1970.

Παραπομπή MLA

Ravindran Nair, R., και C. George Philip. Mechanical Engineering. State Institute of Languages, 1970.