APA Alıntı

Held , G. . .. (1994). Understanding Data Communications (4.). Prentice Hall of India.

Chicago Stili Alıntı

Held , Gilbert. Understanding Data Communications. 4. New Delhi: Prentice Hall of India, 1994.

MLA Alıntı

Held , Gilbert. Understanding Data Communications. 4. Prentice Hall of India, 1994.