Cita APA (7a ed.)

Pietsch, A. (1987). Eigenvalues and S-numbers. University Press.

Cita Chicago Style (17a ed.)

Pietsch, A. Eigenvalues and S-numbers. Cambridge [etc.]: University Press, 1987.

Cita MLA (9a ed.)

Pietsch, A. Eigenvalues and S-numbers. University Press, 1987.