Veltkamp, M. (2013). Free form structural design: Schemes, systems & prototypes of structures for irregular shaped buildings. IOS Press.
Trích dẫn kiểu ChicagoVeltkamp, Martijn. Free Form Structural Design: Schemes, Systems & Prototypes of Structures for Irregular Shaped Buildings. IOS Press, 2013.
Trích dẫn MLAVeltkamp, Martijn. Free Form Structural Design: Schemes, Systems & Prototypes of Structures for Irregular Shaped Buildings. IOS Press, 2013.
Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.