Παραπομπή APA

Bonsall, F. F., & Duncan, J. (1971). Numerical ranges of operators on normed spaces and of elements of normed algebras. Cambridge University Press.

Παραπομπή Chicago Style

Bonsall, F. F., και J. Duncan. Numerical Ranges of Operators on Normed Spaces and of Elements of Normed Algebras. London: Cambridge University Press, 1971.

Παραπομπή MLA

Bonsall, F. F., και J. Duncan. Numerical Ranges of Operators on Normed Spaces and of Elements of Normed Algebras. Cambridge University Press, 1971.