@BOOK{NAP11212, author = "National Research Council", title = "Animal Care and Management at the National Zoo: Final Report", isbn = "978-0-309-09583-9", doi = "10.17226/11212", url = "https://nap.nationalacademies.org/catalog/11212/animal-care-and-management-at-the-national-zoo-final-report", year = 2005, publisher = "The National Academies Press", address = "Washington, DC" }