(1969). Catalog of books 1969. New York: Litton Educational Publishing.
Trích dẫn kiểu ChicagoCatalog of Books 1969. New York: Litton Educational Publishing, 1969.
MLA引文Catalog of Books 1969. New York: Litton Educational Publishing, 1969.
警告:这些引文格式不一定是100%准确.