APA引文

Birkel, M., & Sarkar, S. (1997). Ruling out a critical density baryonic universe.

Chicago Style (17th ed.) Citation

Birkel, M., and S. Sarkar. Ruling Out a Critical Density Baryonic Universe. 1997.

MLA引文

Birkel, M., and S. Sarkar. Ruling Out a Critical Density Baryonic Universe. 1997.

警告：這些引文格式不一定是100％准確.