Citazione APA

Spiller, R. E., & Emerson, R. W. Collected works of Ralph Waldo Emerson.

Stile di citazione Chicago

Spiller, Robert E., e Ralph Waldo Emerson. Collected Works of Ralph Waldo Emerson. New York.

Citazione MLA

Spiller, Robert E., e Ralph Waldo Emerson. Collected Works of Ralph Waldo Emerson.