Gallager, R. G., Low Density Parity Check Codes, Monograph, M.I.T. Press, 1963. Postscript version

Gallager, R. G., Information Theory and Reliable Communication, John Wiley and Sons, New York, 1968.

Bertsekas, D. P. and Gallager, R. G., Data Networks, Prentice-Hall, Inc., Englewood Cliffs, N.J., 1987; Edition 2, Dec. 1991.

Gallager, R. G., Discrete Stochastic Processes, Kluwer, Boston, 1996

Gallager, R. G. Principles of Digital Communication, Cambridge University Press, Cambridge, UK, 2008. Erratta in Prin. Dig. Comm.