APA (7th ed.) Citation

Weiskamp, K., Shammas, N. C., & Pronk, R. (1989). Turbo language essentials: A programmer's reference. Wiley.

Chicago Style (17th ed.) Citation

Weiskamp, Keith, Namir Clement Shammas, and Ron Pronk. Turbo Language Essentials: A Programmer's Reference. New York: Wiley, 1989.

MLA (9th ed.) Citation

Weiskamp, Keith, et al. Turbo Language Essentials: A Programmer's Reference. Wiley, 1989.