Sweet, T. (2002). American georgics: Economy and environment in early American literature. University of Pennsylvania Press.
芝加哥风格引文Sweet, Timothy. American Georgics: Economy and Environment in Early American Literature. Philadelphia: University of Pennsylvania Press, 2002.
MLA引文Sweet, Timothy. American Georgics: Economy and Environment in Early American Literature. University of Pennsylvania Press, 2002.
警告：这些引文格式不一定是100％准确.