Cita APA (7a ed.)

Ahmer, S., Yousafzai, A. W., Bhutto, N., Alam, S., Sarangzai, A. K., & Iqbal, A. (2008). Bullying of medical students in Pakistan: A cross-sectional questionnaire survey. Public Library of Science (PLoS).

Cita Chicago Style (17a ed.)

Ahmer, Syed, Abdul Wahab Yousafzai, Naila Bhutto, Sumira Alam, Amanullah Khan Sarangzai, y Arshad Iqbal. Bullying of Medical Students in Pakistan: A Cross-sectional Questionnaire Survey. Public Library of Science (PLoS), 2008.

Cita MLA (8a ed.)

Ahmer, Syed, et al. Bullying of Medical Students in Pakistan: A Cross-sectional Questionnaire Survey. Public Library of Science (PLoS), 2008.