APA (7th ed.) Citation

Ljapin, E. S. (1963). Semigroups. American Mathematical Society.

Chicago Style (17th ed.) Citation

Ljapin, E. S. Semigroups. Providence, R.I: American Mathematical Society, 1963.

MLA (9th ed.) Citation

Ljapin, E. S. Semigroups. American Mathematical Society, 1963.

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