Witsberger, Tige H.; Levine, Jonathan M.; Fosgate, Geoffrey Theodore; Slater, Margaret R.; Kerwin, Sharon C.; Russell, Karen E.; Levine, Gwendolyn J.(American Veterinary Medical Association, 2012-03-01)
Levine, Gwendolyn J.; Cook, Jennifer R.; Kerwin, Sharon C.; Mankin, Joseph M.; Griffin, John F.; Fosgate, Geoffrey Theodore; Levine, Jonathan M.(Wiley, 2014-09)