Citazione Stile APA (7a Edizione)

Twombly, R. C. (1986). Louis Sullivan: His life and work. Viking.

Citazione stile Chigago Style (17a edizione)

Twombly, Robert C. Louis Sullivan: His Life and Work. New York, N.Y., U.S.A: Viking, 1986.

Citatione MLA (9a ed.)

Twombly, Robert C. Louis Sullivan: His Life and Work. Viking, 1986.