Cita APA (7th ed.)
Gerling, H. (2002). All About machine tools. New Age International.
Cita Chicago (17th ed.)
Gerling, Heinrich. All About Machine Tools. Calcutta: New Age International, 2002.
Cita MLA (9th ed.)
Gerling, Heinrich. All About Machine Tools. New Age International, 2002.
Atenció: Aquestes cites poden no estar 100% correctes.