Παραπομπή APA

Unstead, P. J. (1965). Questions and answers on automobile engines. Book centre pvt.ltd.

Παραπομπή Chicago Style

Unstead, P J. Questions and Answers on Automobile Engines. Bombay: Book centre pvt.ltd, 1965.

Παραπομπή MLA

Unstead, P J. Questions and Answers on Automobile Engines. Book centre pvt.ltd, 1965.