APA (7th ed.) Citation

Khazal, R. R., Breaz, S., & Calugareanu, G. On torsion-free periodic rings. Wiley.

Chicago Style (17th ed.) Citation

Khazal, R. R., S. Breaz, and G. Calugareanu. On Torsion-free Periodic Rings. Wiley.

MLA (9th ed.) Citation

Khazal, R. R., et al. On Torsion-free Periodic Rings. Wiley.