APA (7th ed.) Citation

Westfall, P. P. (1949). On the leech and its use in medicine. s.n..

Chicago Style (17th ed.) Citation

Westfall, Paul Peter. On the Leech and Its Use in Medicine. [S.l.: s.n., 1949.

MLA (8th ed.) Citation

Westfall, Paul Peter. On the Leech and Its Use in Medicine. s.n., 1949.