The HSUS works to end invasive research on our closest cousins, exposing widespread suffering at a federal facility and lobbying to retire chimpanzees to sanctuary
"The Chimpanzee Challenge,"
Serial - All Animals 2009-15: Vol. 11
, Article 5.
Available at: https://www.wellbeingintlstudiesrepository.org/allanimals/vol11/iss3/5