Krugman, S., & Ward, R. (1968). Infectious diseases of children (4th ed.). Mosby.
Dyfyniad Arddull ChicagoKrugman, Saul, and Robert Ward. Infectious Diseases of Children. 4th ed. Saint Louis: Mosby, 1968.
Dyfyniad MLAKrugman, Saul, and Robert Ward. Infectious Diseases of Children. 4th ed. Mosby, 1968.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.