NELSON, R. F. (1981). The almanac of American letters. William Kaufmann.
芝加哥风格引文NELSON, Randy F. The Almanac of American Letters. California: William Kaufmann, 1981.
MLA引文NELSON, Randy F. The Almanac of American Letters. William Kaufmann, 1981.
警告：这些引文格式不一定是100％准确.