Johnson, R., & Bruegmann, R. (1995). Ralph Johnson of Perkins & Will: Buildings and projects. Rizzoli.
Cita Chicago (17th ed.)Johnson, Ralph, i Robert Bruegmann. Ralph Johnson of Perkins & Will: Buildings and Projects. New York: Rizzoli, 1995.
Cita MLA (9th ed.)Johnson, Ralph, i Robert Bruegmann. Ralph Johnson of Perkins & Will: Buildings and Projects. Rizzoli, 1995.
Atenció: Aquestes cites poden no estar 100% correctes.