Stanfield, Vicki (2006). Linux System Administration. Craig Hunt Linux Library. Roderick W. Smith (2 ed.). John Wiley & Sons. p. 152. ISBN9780782152203. 2 जनवरी 2014 को मूल से पुरालेखित. अभिगमन तिथि: 2012-11-27. The command sg is frequently a synonym for newgrp.
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Stanfield, Vicki (2006). Linux System Administration. Craig Hunt Linux Library. Roderick W. Smith (2 ed.). John Wiley & Sons. p. 152. ISBN9780782152203. 2 जनवरी 2014 को मूल से पुरालेखित. अभिगमन तिथि: 2012-11-27. The command sg is frequently a synonym for newgrp.
