1. Bird
Owner's Home, Health and Care Handbook by Gary A. Gallerstein, D.V.M.
Published by Howell Book House Inc.
� 1984 by Gary Gallerstein, D.V.M.
ISBN: 0-87605-820-9
2. Budgerigars: A Complete Guide by Stan and Barbara Moizer
Published by Merehurst Press
� 1988 by Merehurst Limited
ISBN: 0-947027-97-1