APA (7th ed.) Citation

Leonsis, T., & Lea, J. (1985). Mastering the IBM Assistant series. Sybex.

Chicago Style (17th ed.) Citation

Leonsis, Ted, and Jeff Lea. Mastering the IBM Assistant Series. Berkeley, Calif.: Sybex, 1985.

MLA (9th ed.) Citation

Leonsis, Ted, and Jeff Lea. Mastering the IBM Assistant Series. Sybex, 1985.