May, J., Peto, R., Tinker, C., & Fletcher, C. (1973). A study of Hemophilus influenzae precipitins in the serum of working men in relation to smoking habits, bronchial infection, and airway obstruction.
Chicago-referens (17:e uppl.)May, JR, R. Peto, C. Tinker, och C. Fletcher. A Study of Hemophilus Influenzae Precipitins in the Serum of Working Men in Relation to Smoking Habits, Bronchial Infection, and Airway Obstruction. 1973.
MLA-referens (9:e uppl.)May, JR, et al. A Study of Hemophilus Influenzae Precipitins in the Serum of Working Men in Relation to Smoking Habits, Bronchial Infection, and Airway Obstruction. 1973.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.