APA استشهاد

Gerling, H. (2006). All about machine tools (2nd ed.). New Age International.

استشهاد بنمط شيكاغو

Gerling, Heinrich. All About Machine Tools. 2nd ed. New Delhi: New Age International, 2006.

MLA استشهاد

Gerling, Heinrich. All About Machine Tools. 2nd ed. New Age International, 2006.