Park, W. H., & Williams, A. W. (1914). Pathogenic microörganisms: A practical manual for students, physicians, and health officers (5th ed., enl., and throughly rev.). Lea & Febiger.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPark, William Hallock, और Anna Wessels Williams. Pathogenic Microörganisms: A Practical Manual for Students, Physicians, and Health Officers. 5th ed., enl., and throughly rev. New York, Philadelphia: Lea & Febiger, 1914.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPark, William Hallock, और Anna Wessels Williams. Pathogenic Microörganisms: A Practical Manual for Students, Physicians, and Health Officers. 5th ed., enl., and throughly rev. Lea & Febiger, 1914.
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