APA (7th ed.) Citation

Spector, P. (2001). An Introduction to S and S-PLUS (4. print.). Duxbury Press.

Chicago Style (17th ed.) Citation

Spector, Phil. An Introduction to S and S-PLUS. 4. print. Belmont, Calif: Duxbury Press, 2001.

MLA (9th ed.) Citation

Spector, Phil. An Introduction to S and S-PLUS. 4. print. Duxbury Press, 2001.