GLAESER, L. The Work Of Frei Otto And His Team 1955-1976. s.n.
Chicago Style (17th ed.) CitationGLAESER, Ludwig. The Work Of Frei Otto And His Team 1955-1976. s.n.
MLA引文GLAESER, Ludwig. The Work Of Frei Otto And His Team 1955-1976. s.n.
警告：這些引文格式不一定是100％准確.