Chin, Control of Communicable Diseases Manual, p. 367-368, p. 458-459
Collier,o Human Virology, p. 105-112
ProMed, Archive numbers: 20010826.2021 and 20030924.2405, "Sheep Owners: Sheep in Good Health," and "Virus Closes Animal Exhibit"
Ryan, Sherris Medical Microbiology, p. 525-529
Wilson, Current Diagnosis and Treatment in Infectious Diseases, p. 448-450