Cita APA (7th ed.)

Kreyszig, E. (1978). Introductory Functional Analysis with Applications. John Wiley & Sons.

Cita Chicago (17th ed.)

Kreyszig, Erwin. Introductory Functional Analysis with Applications. New York: John Wiley & Sons, 1978.

Cita MLA (9th ed.)

Kreyszig, Erwin. Introductory Functional Analysis with Applications. John Wiley & Sons, 1978.