Snodgrass, M. E. (1997). Encyclopedia of frontier literature. ABC-CLIO.
芝加哥风格引文Snodgrass, Mary Ellen. Encyclopedia of Frontier Literature. Santa Barbara, Calif.: ABC-CLIO, 1997.
MLA引文Snodgrass, Mary Ellen. Encyclopedia of Frontier Literature. ABC-CLIO, 1997.
警告：这些引文格式不一定是100％准确.