Allen, E. M. (1930). America's story as told in postage stamps. Whittlesey House.
芝加哥风格引文Allen, Edward Monington. America's Story as Told in Postage Stamps. New York: Whittlesey House, 1930.
MLA引文Allen, Edward Monington. America's Story as Told in Postage Stamps. Whittlesey House, 1930.
警告：这些引文格式不一定是100％准确.