Cita APA (7th ed.)

Ray, R. B. (2012). Walden x 40: Essays on Thoreau. Indiana University Press.

Cita Chicago (17th ed.)

Ray, Robert B. Walden X 40: Essays on Thoreau. Bloomington, Ind.: Indiana University Press, 2012.

Cita MLA (9th ed.)

Ray, Robert B. Walden X 40: Essays on Thoreau. Indiana University Press, 2012.