APA (7th ed.) Citation

Aksakov, S. T., & Duff, J. D. (1916). Years of childhood. E. Arnold.

Chicago Style (17th ed.) Citation

Aksakov, S. T., and J. D. Duff. Years of Childhood. London: E. Arnold, 1916.

MLA (9th ed.) Citation

Aksakov, S. T., and J. D. Duff. Years of Childhood. E. Arnold, 1916.