Cita APA (7th ed.)

JOHNSON, R. (1995). Ralph Johnson of perkins and will building and projects. Rizzoli.

Cita Chicago (17th ed.)

JOHNSON, Ralph. Ralph Johnson of Perkins and Will Building and Projects. New York: Rizzoli, 1995.

Cita MLA (9th ed.)

JOHNSON, Ralph. Ralph Johnson of Perkins and Will Building and Projects. Rizzoli, 1995.

Atenció: Aquestes cites poden no estar 100% correctes.