APA

christis A., . (1980). infectious diseases: epidemiology and clinical practice. new york: churchill livingstone.

Chicago

christis A.B, . 1980. infectious diseases: epidemiology and clinical practice. new york: churchill livingstone.

Harvard

christis A., . (1980). infectious diseases: epidemiology and clinical practice. new york: churchill livingstone.

MLA

christis A.B, . infectious diseases: epidemiology and clinical practice. new york: churchill livingstone. 1980.