APA Edition Citation

Heck, H. (1993). UNIX: Working with UNIX and XENIX. Prisma computer courses.

Chicago Edition Citation

Heck, Hans-Josef. UNIX: Working with UNIX and XENIX. Great Britain: Prisma computer courses, 1993.

MLA Edition Citation

Heck, Hans-Josef. UNIX: Working with UNIX and XENIX. Prisma computer courses, 1993.

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