APA
Johnson E. F., Johnson E. F., . (1990). X Window application programming. New Delhi: BPB Publications.
Chicago
Johnson Eric F, Johnson Eric F, . 1990. X Window application programming. New Delhi: BPB Publications.
Harvard
Johnson E. F., Johnson E. F., . (1990). X Window application programming. New Delhi: BPB Publications.
MLA
Johnson Eric F, Johnson Eric F, . X Window application programming. New Delhi: BPB Publications. 1990.