APA (7th ed.) Citation

Mann, T., Amann, P., & Winston, R. (1961). Letters to Paul Amann (1915-1952). Secker & Warburg.

Chicago Style (17th ed.) Citation

Mann, Thomas, Paul Amann, and Richard Winston. Letters to Paul Amann (1915-1952). London: Secker & Warburg, 1961.

MLA (8th ed.) Citation

Mann, Thomas, et al. Letters to Paul Amann (1915-1952). Secker & Warburg, 1961.