Cita APA (7a ed.)

Kaufman, P. E., Koehler, P. G., & Butler, J. F. (2006). External Parasites of Sheep and Goats. The University of Florida George A. Smathers Libraries.

Cita Chicago Style (17a ed.)

Kaufman, Phillip E., Philip G. Koehler, y Jerry F. Butler. External Parasites of Sheep and Goats. The University of Florida George A. Smathers Libraries, 2006.

Cita MLA (9a ed.)

Kaufman, Phillip E., et al. External Parasites of Sheep and Goats. The University of Florida George A. Smathers Libraries, 2006.