APA
Petersen K., . (2008). Linux : the complete reference. Tata McGraw Hill, New Delhi: .
Chicago
Petersen Kichard, . 2008. Linux : the complete reference. Tata McGraw Hill, New Delhi: .
Harvard
Petersen K., . (2008). Linux : the complete reference. Tata McGraw Hill, New Delhi: .
MLA
Petersen Kichard, . Linux : the complete reference. Tata McGraw Hill, New Delhi: . 2008.