(1987). Parasites of sheep. New Jersey: Merck co.
Chicago Style aipamenaParasites of Sheep. New Jersey: Merck co, 1987.
MLA aipamenaParasites of Sheep. New Jersey: Merck co, 1987.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
(1987). Parasites of sheep. New Jersey: Merck co.
Chicago Style aipamenaParasites of Sheep. New Jersey: Merck co, 1987.
MLA aipamenaParasites of Sheep. New Jersey: Merck co, 1987.