APA (7th ed.) Citation

Trubet︠s︡koĭ, N. S. (1969). Principles of phonology. University of California Press.

Chicago Style (17th ed.) Citation

Trubet︠s︡koĭ, Nikolaĭ Sergeevich. Principles of Phonology. Berkeley: University of California Press, 1969.

MLA (9th ed.) Citation

Trubet︠s︡koĭ, Nikolaĭ Sergeevich. Principles of Phonology. University of California Press, 1969.