Frei Otto; Form and structure

MLA

Drew, P. Frei Otto; Form and Structure. Stuttgart: Verlag Gerd Hatje, 1976.

APA

Drew, P. (1976). Frei Otto; Form and structure. Stuttgart: Verlag Gerd Hatje.

Chicago

Drew, P. Frei Otto; Form and Structure. Stuttgart: Verlag Gerd Hatje, 1976.