Nichols, H. J., & Kelser, R. A. (1922). Carriers in infectious diseases: A manual on the importance, pathology, diagnosis and treatment of human carriers. Williams & Wilkins company.
Chicago-referens (17:e uppl.)Nichols, Henry James, och Raymond Alexander Kelser. Carriers in Infectious Diseases: A Manual on the Importance, Pathology, Diagnosis and Treatment of Human Carriers. Baltimore: Williams & Wilkins company, 1922.
MLA-referens (8:e uppl.)Nichols, Henry James, och Raymond Alexander Kelser. Carriers in Infectious Diseases: A Manual on the Importance, Pathology, Diagnosis and Treatment of Human Carriers. Williams & Wilkins company, 1922.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.