APA (7th ed.) Citation

Ljapin, E. S. (1974). Semigroups (3. ed.). American Math. Soc.

Chicago Style (17th ed.) Citation

Ljapin, E. S. Semigroups. 3. ed. Providence, RI: American Math. Soc, 1974.

MLA (9th ed.) Citation

Ljapin, E. S. Semigroups. 3. ed. American Math. Soc, 1974.