APA (7th ed.) Citation

Clark, J. F., & Drum, W. O. (1989). Structured BASIC: IBM PC/TRS-80 version (2nd ed.). South Western Pub. Co..

Chicago Style (17th ed.) Citation

Clark, James F., and William O. Drum. Structured BASIC: IBM PC/TRS-80 Version. 2nd ed. Cincinnati: South Western Pub. Co., 1989.

MLA (9th ed.) Citation

Clark, James F., and William O. Drum. Structured BASIC: IBM PC/TRS-80 Version. 2nd ed. South Western Pub. Co., 1989.