Kaufman, P. E., Koehler, P. G., & Butler, J. F. (2006). External Parasites of Sheep and Goats. The University of Florida George A. Smathers Libraries.
Chicago Style (17. basım) AtıfKaufman, Phillip E., Philip G. Koehler, ve Jerry F. Butler. External Parasites of Sheep and Goats. The University of Florida George A. Smathers Libraries, 2006.
MLA (9th ed.) AtıfKaufman, Phillip E., et al. External Parasites of Sheep and Goats. The University of Florida George A. Smathers Libraries, 2006.
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