Barker, D. (1973). Practical epidemiology. Longman.
Citación estilo ChicagoBarker, Djp. Practical Epidemiology. Longman, 1973.
Cita MLABarker, Djp. Practical Epidemiology. Longman, 1973.
Warning: These citations may not always be 100% accurate.
Cita APA