Cita APA (7a ed.)
Elfil, M., & Negida, A. (2017). Sampling methods in Clinical Research; an Educational Review. Emergency, 5(1), 265-268.
Cita Chicago Style (17a ed.)
Elfil, Mohamed, y Ahmed Negida. "Sampling Methods in Clinical Research; an Educational Review." Emergency 5, no. 1 (2017): 265-268.
Cita MLA (9a ed.)
Elfil, Mohamed, y Ahmed Negida. "Sampling Methods in Clinical Research; an Educational Review." Emergency, vol. 5, no. 1, 2017, pp. 265-268.
Precaución: Estas citas no son 100% exactas.