de Waal, H. L. (1941). A study of the serological types of haemolytic streptococci in relation to the epidemiology of scarlatina and other infections due to these organisms.
Citação norma Chicagode Waal, H. L. A Study of the Serological Types of Haemolytic Streptococci in Relation to the Epidemiology of Scarlatina and Other Infections Due to These Organisms. 1941.
Citação norma MLAde Waal, H. L. A Study of the Serological Types of Haemolytic Streptococci in Relation to the Epidemiology of Scarlatina and Other Infections Due to These Organisms. 1941.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.