Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.