APA
Norton P., Hahn H., . (1996). Guide to Unix. New Delhi: BPB Publications.
Chicago
Norton Peter, Hahn Harley, . 1996. Guide to Unix. New Delhi: BPB Publications.
Harvard
Norton P., Hahn H., . (1996). Guide to Unix. New Delhi: BPB Publications.
MLA
Norton Peter, Hahn Harley, . Guide to Unix. New Delhi: BPB Publications. 1996.