Fullformexpand.com, 2026. "APUE." Accessed April 18, 2026. https://www.fullformexpand.com/apue/advanced-programming-in-the-unix-environment.
"APUE." (n.d.). Fullformexpand.com. Retrieved April 18, 2026, from https://www.fullformexpand.com/apue/advanced-programming-in-the-unix-environment.
APUE. (2026). Fullformexpand.com. Available at: https://www.fullformexpand.com/apue/advanced-programming-in-the-unix-environment (Accessed: 18 April 2026).