Lang, R. J. (2011). Origami design secrets: Mathematical methods for an ancient art (2nd.). CRC Press.
Chicago-čujuhus (17. p.)Lang, Robert J. Origami Design Secrets: Mathematical Methods for an Ancient Art. 2nd. Boca Raton: CRC Press, 2011.
MLA-čujuhus (9. p.)Lang, Robert J. Origami Design Secrets: Mathematical Methods for an Ancient Art. 2nd. CRC Press, 2011.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.