Gallenmüller, T., & Ludwig, F. (2018). The Tree Constructor: Ferdinand Ludwig is a German architect and Professor for Green Technologies in Landscape Architecture at the Technical University of Munich. : an interview / von Tanja Gallenmüller und Ferdinand Ludwig. Topos.
Chicago-viite (17. p.)Gallenmüller, Tanja, ja Ferdinand Ludwig. "The Tree Constructor: Ferdinand Ludwig Is a German Architect and Professor for Green Technologies in Landscape Architecture at the Technical University of Munich. : An Interview / Von Tanja Gallenmüller Und Ferdinand Ludwig." Topos 2018.
MLA-viite (8. p.)Gallenmüller, Tanja, ja Ferdinand Ludwig. "The Tree Constructor: Ferdinand Ludwig Is a German Architect and Professor for Green Technologies in Landscape Architecture at the Technical University of Munich. : An Interview / Von Tanja Gallenmüller Und Ferdinand Ludwig." Topos, 2018.