APA (7th ed.) Citation

Sayre, R. F. (1977). Thoreau and the American Indians. Princeton University Press.

Chicago Style (17th ed.) Citation

Sayre, Robert F. Thoreau and the American Indians. Princeton, N.J.: Princeton University Press, 1977.

MLA (9th ed.) Citation

Sayre, Robert F. Thoreau and the American Indians. Princeton University Press, 1977.