APA-referens (7:e uppl.)

Hudspeth, R. N. (2014). The correspondence of Henry D. Thoreau. Princeton University Press.

Chicago-referens (17:e uppl.)

Hudspeth, Robert N. The Correspondence of Henry D. Thoreau. Princeton, New Jersey ; Oxfordshire, England: Princeton University Press, 2014.

MLA-referens (9:e uppl.)

Hudspeth, Robert N. The Correspondence of Henry D. Thoreau. Princeton University Press, 2014.