APA (7th ed.) Citation

Topham, D. (1990). The first book of UNIX. Howard W. Sams.

Chicago Style (17th ed.) Citation

Topham, Douglas. The First Book of UNIX. Carmel, IN: Howard W. Sams, 1990.

MLA (9th ed.) Citation

Topham, Douglas. The First Book of UNIX. Howard W. Sams, 1990.

Warning: These citations may not always be 100% accurate.