Avella, N. (2009). Paper engineering: 3D design techniques for a 2D material (Revised & extended edition.). RotoVisionSA.
Cita Chicago (17th ed.)Avella, Natalie. Paper Engineering: 3D Design Techniques for a 2D Material. Revised & extended edition. Mies, Switzerland: RotoVisionSA, 2009.
Cita MLA (9th ed.)Avella, Natalie. Paper Engineering: 3D Design Techniques for a 2D Material. Revised & extended edition. RotoVisionSA, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.