Huggins-Cooper, L. (2014). How to invent: Beyond Rubik's cube (1a. ed.). QEB Publishing.
Cita Chicago (17th ed.)Huggins-Cooper, Lynn. How to Invent: Beyond Rubik's Cube. 1a. ed. Irvine: QEB Publishing, 2014.
Cita MLA (9th ed.)Huggins-Cooper, Lynn. How to Invent: Beyond Rubik's Cube. 1a. ed. QEB Publishing, 2014.
Atenció: Aquestes cites poden no estar 100% correctes.