Garg, V. K., & Wilkes, J. E. (1999). Principles and applications of GSM. Prentice Hall PTR.
Lua i Stíl Chicago (17ú heag.)Garg, Vijay Kumar, agus Joseph E. Wilkes. Principles and Applications of GSM. Upper Saddle River, N.J. : New Delhi: Prentice Hall PTR, 1999.
Lua MLA (8ú heag.)Garg, Vijay Kumar, agus Joseph E. Wilkes. Principles and Applications of GSM. Prentice Hall PTR, 1999.
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