Schell, S. C. (1985). Handbook of trematodes of North America North of Mexico. University Press of Idaho.
Lua i Stíl Chicago (17ú heag.)Schell, Stewart C. Handbook of Trematodes of North America North of Mexico. Moscow, Idaho: University Press of Idaho, 1985.
Lua MLA (9ú heag.)Schell, Stewart C. Handbook of Trematodes of North America North of Mexico. University Press of Idaho, 1985.
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