APA (7th ed.) Citation

Weber, M., Zoubaa, S., Politi, M., Grunwald, I., & Essig, M. (2007). Sellar tumors.

Chicago Style (17th ed.) Citation

Weber, M., S. Zoubaa, M. Politi, I. Grunwald, and M. Essig. Sellar Tumors. 2007.

MLA (9th ed.) Citation

Weber, M., et al. Sellar Tumors. 2007.