APA
Petersen R. L., . (2003). The Complete Reference: Linux. New Delhi: TMH Publ.co.Ltd.
Chicago
Petersen Richerd L, . 2003. The Complete Reference: Linux. New Delhi: TMH Publ.co.Ltd.
Harvard
Petersen R. L., . (2003). The Complete Reference: Linux. New Delhi: TMH Publ.co.Ltd.
MLA
Petersen Richerd L, . The Complete Reference: Linux. New Delhi: TMH Publ.co.Ltd. 2003.