APA (7th ed.) Citation

Simpson, A., Currid, C. C., & Gillett, C. A. (1989). Power user's guide to R: BASE. SYBEX.

Chicago Style (17th ed.) Citation

Simpson, Alan, Cheryl C. Currid, and Craig A. Gillett. Power User's Guide to R: BASE. San Francisco: SYBEX, 1989.

MLA (8th ed.) Citation

Simpson, Alan, et al. Power User's Guide to R: BASE. SYBEX, 1989.