APA (7th ed.) Citation

Lien, D. A. (1989). MS-DOS: The advanced course. CompuSoft Pub..

Chicago Style (17th ed.) Citation

Lien, David A. MS-DOS: The Advanced Course. San Diego, CA: CompuSoft Pub., 1989.

MLA (9th ed.) Citation

Lien, David A. MS-DOS: The Advanced Course. CompuSoft Pub., 1989.

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