Robbins, R. W. (1970). Discovery at Walden: Illustrated with the exclusive photographs of Thoreau's Chimney Foundation and other excavations. Folcroft Pr.
Chicago-Zitierstil (17. Ausg.)Robbins, Roland Wells. Discovery at Walden: Illustrated with the Exclusive Photographs of Thoreau's Chimney Foundation and Other Excavations. Folcroft, Pa: Folcroft Pr, 1970.
MLA-Zitierstil (9. Ausg.)Robbins, Roland Wells. Discovery at Walden: Illustrated with the Exclusive Photographs of Thoreau's Chimney Foundation and Other Excavations. Folcroft Pr, 1970.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.