APA
, . (1995). PC Learning Labs teaches DOS 6 & 6.2. New Delhi: BPB Pub.
Chicago
, . 1995. PC Learning Labs teaches DOS 6 & 6.2. New Delhi: BPB Pub.
Harvard
, . (1995). PC Learning Labs teaches DOS 6 & 6.2. New Delhi: BPB Pub.
MLA
, . PC Learning Labs teaches DOS 6 & 6.2. New Delhi: BPB Pub. 1995.