Lyapin, E. S., Aizenshtat, A. Y., Lesokhin, M. M., Zitarelli, D. E., Aizenshtat, A. I. A., & Lesokhin, M. M. (1972). Exercises in group theory. Philadelphia: Plenum Press.

Lyapin, E. S., A. Y. Aizenshtat, M. M. Lesokhin, David E. Zitarelli, A. I. A. Aizenshtat, and Mikhail Moiseevich Lesokhin. Exercises in Group Theory. Philadelphia: Plenum Press, 1972.

Lyapin, E. S., et al. Exercises in Group Theory. Philadelphia: Plenum Press, 1972.