APA (7th ed.) Citation

Baron, Haskell, A. L., & Sitwell, S. (1952). Baron at the ballet (4th imp.). Collins.

Chicago Style (17th ed.) Citation

Baron, Arnold L. Haskell, and Sacheverell Sitwell. Baron at the Ballet. 4th imp. London: Collins, 1952.

MLA (9th ed.) Citation

Baron, et al. Baron at the Ballet. 4th imp. Collins, 1952.