Παραπομπή APA

Engel, K. J., & Nagel, R. (2006). short course on operator semigroups. Springer.

Παραπομπή Chicago Style

Engel, Klaus- Jochen, και Rainer Nagel. Short Course on Operator Semigroups. New York: Springer, 2006.

Παραπομπή MLA

Engel, Klaus- Jochen, και Rainer Nagel. Short Course on Operator Semigroups. Springer, 2006.