Hui, D., & Rykwert, J. Sign conceptions in architecture and fine arts from the 19th century to the present: Desmond Hui. Joseph Rykwert. [Semiotik, 2].(1998).

Hui, Desmond, and Joseph Rykwert. "Sign Conceptions in Architecture and Fine Arts from the 19th Century to the Present: Desmond Hui. Joseph Rykwert." [Semiotik, 2].(1998) .

Hui, Desmond, and Joseph Rykwert. "Sign Conceptions in Architecture and Fine Arts from the 19th Century to the Present: Desmond Hui. Joseph Rykwert." [Semiotik, 2].(1998), .