APA (7th ed.) Citation

Titus, J. A., Titus, C. A., & Larsen, D. G. (1979). TRS-80 Interfacing. H. W. Sams.

Chicago Style (17th ed.) Citation

Titus, Jonathan A., Christopher A. Titus, and David G. Larsen. TRS-80 Interfacing. Indianapolis: H. W. Sams, 1979.

MLA (9th ed.) Citation

Titus, Jonathan A., et al. TRS-80 Interfacing. H. W. Sams, 1979.