APA (7th ed.) Citation

Mahler, G., Mahler, A., & Martner, K. (1979). Selected letters of Gustav Mahler (Rev. ed.). Farrar, Straus, Giroux.

Chicago Style (17th ed.) Citation

Mahler, Gustav, Alma Mahler, and Knud Martner. Selected Letters of Gustav Mahler. Rev. ed. New York: Farrar, Straus, Giroux, 1979.

MLA (9th ed.) Citation

Mahler, Gustav, et al. Selected Letters of Gustav Mahler. Rev. ed. Farrar, Straus, Giroux, 1979.