APA (7th ed.) Citation

Axler, S., Bourdon, P., & Ramey, W. (2001). Harmonic function theory (2nd ed.). Springer.

Chicago Style (17th ed.) Citation

Axler, Sheldon, Paul Bourdon, and Wade Ramey. Harmonic Function Theory. 2nd ed. New York: Springer, 2001.

MLA (8th ed.) Citation

Axler, Sheldon, et al. Harmonic Function Theory. 2nd ed. Springer, 2001.