APA (7th ed.) Citation

Klein, A. A., & Bell, H. E. On some center-like subsets of groups. Wiley.

Chicago Style (17th ed.) Citation

Klein, Abraham A., and Howard E. Bell. On Some Center-like Subsets of Groups. Wiley.

MLA (9th ed.) Citation

Klein, Abraham A., and Howard E. Bell. On Some Center-like Subsets of Groups. Wiley.

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