Tohutoro APA (7th ed.)
Otto, F., & Songel, J. M. (2010). A conversation with Frei Otto (English ed.). Princeton Architectural Press.
Tohutoru Kātū Chicago (17th ed.)
Otto, Frei, me Juan María Songel. A Conversation with Frei Otto. English ed. New York: Princeton Architectural Press, 2010.
Tohutoro MLA (9th ed.)
Otto, Frei, me Juan María Songel. A Conversation with Frei Otto. English ed. Princeton Architectural Press, 2010.
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