Spencer, E., Araya, M., Sandino, A. M., Pacheco, I., & Brunser, O. (1988). Faecal excretion of rotavirus and other enteropathogens in newborns of the high and low socio-economic stratum in Santiago, Chile. Cambridge University Press.

Spencer, E., M. Araya, A. M. Sandino, I. Pacheco, και O. Brunser. Faecal Excretion of Rotavirus and Other Enteropathogens in Newborns of the High and Low Socio-economic Stratum in Santiago, Chile. Cambridge University Press, 1988.

Spencer, E., et al. Faecal Excretion of Rotavirus and Other Enteropathogens in Newborns of the High and Low Socio-economic Stratum in Santiago, Chile. Cambridge University Press, 1988.