Westfall, P. P. (1949). On the leech and its use in medicine. s.n..
Chicago Style (17th ed.) CitationWestfall, Paul Peter. On the Leech and Its Use in Medicine. [S.l.: s.n., 1949.
MLA (8th ed.) CitationWestfall, Paul Peter. On the Leech and Its Use in Medicine. s.n., 1949.
Warning: These citations may not always be 100% accurate.