Cramer, Jeffrey S., editor. “Preface.” Walden: A Fully Annotated Edition, by HENRY D. THOREAU, Yale University Press, New Haven; London, 2004, pp. xi-xii, www.jstor.org/stable/j.ctt1npvf7.4. Accessed 11 Aug. 2020.
THOREAU, H. (2004). Preface. In Cramer J. (Ed.), Walden: A Fully Annotated Edition (pp. Xi-Xii). New Haven; London: Yale University Press. Retrieved August 11, 2020, from www.jstor.org/stable/j.ctt1npvf7.4
"Preface." In Walden: A Fully Annotated Edition, edited by Cramer Jeffrey S., by THOREAU HENRY D., Xi-Xii. New Haven; London: Yale University Press, 2004. Accessed August 11, 2020. www.jstor.org/stable/j.ctt1npvf7.4.
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