APA (7th ed.) Citation

Walker, R. S., Luecke, G., & Battle, C. W. (1981). Understanding computer science. Radio Shack.

Chicago Style (17th ed.) Citation

Walker, Roger S., Gerald Luecke, and Charles W. Battle. Understanding Computer Science. Ft. Worth, Tex.: Radio Shack, 1981.

MLA (9th ed.) Citation

Walker, Roger S., et al. Understanding Computer Science. Radio Shack, 1981.