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.
Lua i Stíl Chicago (17ú heag.)Nichols, Henry James, agus Raymond Alexander Kelser. Carriers in Infectious Diseases: A Manual on the Importance, Pathology, Diagnosis and Treatment of Human Carriers. Baltimore: Williams & Wilkins company, 1922.
Lua MLA (8ú heag.)Nichols, Henry James, agus Raymond Alexander Kelser. Carriers in Infectious Diseases: A Manual on the Importance, Pathology, Diagnosis and Treatment of Human Carriers. Williams & Wilkins company, 1922.
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