APA (7th ed.) Citation

Shenton, H. N., Sapir, E., & Jespersen, O. (1931). International communication: A symposium on the language problem. Paul.

Chicago Style (17th ed.) Citation

Shenton, Herbert Newhard, Edward Sapir, and Otto Jespersen. International Communication: A Symposium on the Language Problem. London: Paul, 1931.

MLA (9th ed.) Citation

Shenton, Herbert Newhard, et al. International Communication: A Symposium on the Language Problem. Paul, 1931.