Glass, G., & Ables, K. (2003). UNIX for programmers and users (3rd ed.). Pearson Education.

Glass, Graham, and King Ables. UNIX for Programmers and Users. 3rd ed. Upper Saddle River, N.J.; New Delhi: Pearson Education, 2003.

Glass, Graham, and King Ables. UNIX for Programmers and Users. 3rd ed. Pearson Education, 2003.