APA (7th ed.) Citation

Thoreau, H. D., & Emerson, R. W. (1866). Excursions. Ticknor and Fields.

Chicago Style (17th ed.) Citation

Thoreau, Henry David, and Ralph Waldo Emerson. Excursions. Boston: Ticknor and Fields, 1866.

MLA (9th ed.) Citation

Thoreau, Henry David, and Ralph Waldo Emerson. Excursions. Ticknor and Fields, 1866.