Cita APA

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

Citación estilo Chicago

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

Cita MLA

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

Warning: These citations may not always be 100% accurate.