American Foundation for Continuing Education. (1963). Exploring the universe. McGraw-Hill Book Co., Inc.
芝加哥风格引文American Foundation for Continuing Education. Exploring the Universe. New York: McGraw-Hill Book Co., Inc, 1963.
MLA引文American Foundation for Continuing Education. Exploring the Universe. McGraw-Hill Book Co., Inc, 1963.
警告：这些引文格式不一定是100％准确.