APA (7th ed.) Citation

Lavrov, P. L. (1967). Historical letters. University of California Press.

Chicago Style (17th ed.) Citation

Lavrov, Petr Lavrovich. Historical Letters. Berkeley: University of California Press, 1967.

MLA (9th ed.) Citation

Lavrov, Petr Lavrovich. Historical Letters. University of California Press, 1967.