APA (7th ed.) Citation
Spector, P. (1994). An Introduction to S and S-PLUS. Duxbury Press.
Chicago Style (17th ed.) Citation
Spector, Phil. An Introduction to S and S-PLUS. Belmont: Duxbury Press, 1994.
MLA (9th ed.) Citation
Spector, Phil. An Introduction to S and S-PLUS. Duxbury Press, 1994.
Warning: These citations may not always be 100% accurate.