APA (7th ed.) Citation

Tolstoy, L., & Bruce, I. (1939). Two tracts on religion.

Chicago Style (17th ed.) Citation

Tolstoy, Leo, and Ivan Bruce. Two Tracts on Religion. London, 1939.

MLA (9th ed.) Citation

Tolstoy, Leo, and Ivan Bruce. Two Tracts on Religion. 1939.

Warning: These citations may not always be 100% accurate.