Glaeser, L. (1978). The work of Frei Otto and his teams 1955-1976: Published on the occasion of the exhibition's international tour, organized by the Institute of Foreign Cultural Relations, Stuttgart. Institut für leichte Flächentragwerke.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Glaeser, Ludwig. The Work of Frei Otto and His Teams 1955-1976: Published on the Occasion of the Exhibition's International Tour, Organized by the Institute of Foreign Cultural Relations, Stuttgart. Stuttgart: Institut für leichte Flächentragwerke, 1978.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)Glaeser, Ludwig. The Work of Frei Otto and His Teams 1955-1976: Published on the Occasion of the Exhibition's International Tour, Organized by the Institute of Foreign Cultural Relations, Stuttgart. Institut für leichte Flächentragwerke, 1978.