APA استشهاد

Krause, A., & Olson, M. (2005). Basics of S-Plus (4th.). Springer.

استشهاد بنمط شيكاغو

Krause, Andreas, و Melvin Olson. Basics of S-Plus. 4th. New York: Springer, 2005.

MLA استشهاد

Krause, Andreas, و Melvin Olson. Basics of S-Plus. 4th. Springer, 2005.