APA (7th ed.) Citation

Thoreau, H. D., & Shepard, O. (1921). A week on the Concord and Merrimack rivers. C. Scribner's.

Chicago Style (17th ed.) Citation

Thoreau, Henry David, and Odell Shepard. A Week on the Concord and Merrimack Rivers. New York: C. Scribner's, 1921.

MLA (9th ed.) Citation

Thoreau, Henry David, and Odell Shepard. A Week on the Concord and Merrimack Rivers. C. Scribner's, 1921.