APA Edition Citation

Birkenmeier, G. F., Pak, C., & Rizvi, S. T. Extensions of rings and modules.

Chicago Edition Citation

Birkenmeier, Gary F., Chae-gŏl Pak, and S. Tariq Rizvi. Extensions of Rings and Modules.

MLA Edition Citation

Birkenmeier, Gary F., et al. Extensions of Rings and Modules.