~~Berlekamp, Elwyn & Tom Rodgers, editors, The Mathemagician and Pied Puzzler (a collection in tribute to Martin Gardner), 1999, 1-56881-075-X, A K Peters, Ltd. (Natick, MA) (chapter by Robert Neale, "Self-Designing Tetraflexagons" on p 117).

~~Botermans, Jack, Paper Capers, 1986, 0-8050-0139-5, 120 pp, Henry Holt (10 tetrahedra ring on p. 12, flexicube on p. 16, and a hexaflexagon on p. 86).

~~Gardner, Martin, Hexaflexagons and Other Mathematical Diversions (The First Scientific American Book of Mathematical Puzzles and Games), 1959, 1988, 0-226-28254-6, 202 pp, The University of Chicago Press (hexaflexagons on pp 1-14 only).

~~Gardner, Martin, The Scientific American Book of Mathematical Puzzles and Games, 1959, Simon & Schuster (hexaflexagons on pp 1 - 14 only).

~~Gardner, Martin, The Second Scientific American Book of Mathematical Puzzles and Games, 1961, Simon & Schuster (tetraflexagons on pp 24 - 31 only).

~~Gardner, Martin, Wheels, Life and Other Mathematical Amusements, 1983, 0-7167- 1589-9, 262 pp, W.H. Freeman and Company (tetraflexagon on pp 64-66, 68).

~~Jackson, Paul, Flexagons, 1978, reprinted 1982, no ISBN, 40 pp, British Origami Society (sections on: hexaflexagons, tetraflexagons, ring flexagons and other ideas).

~~Jenkins, Gerald & Anne Wild, Mathematical Curiosities 1 (0-906212-13-8), 2 (0-906212- 14-6) and 3 (0-906212-25-1), 1989-90, 32 pp, Tarquin Publications (Vol 1: rotating polyhedra, hexaflexagon; Vol. 2: six & eight rotating tetrahedra, tetraflexagon; Vol 3: 14 rotating tetrahedra, parallelepipeds, flexitube)

~~Jones, Madeline, The Mysterious Flexagons, 1966, Lib. of Congress No: 66-29294, 48 pp, Crown Publishers (best book ever on tetra and hexaflexagons).

~~Mitchell, David, The Magic of Flexagons, 1998, 1-899618-28-7, 32 pp, Tarquin (Eleven multi-colored flexagons to assemble, four to use for experimentation and a dozen data cards packed with information).

~~Kenneway, Eric, Complete Origami, 0-312-00898-8, 1987, 192 pp, St Martin's Press (history, hexaflexagon and rotating origami flexagon, pp 56-62).

~~Madachy, Joseph, Madachy's Mathematical Recreatons, Dover (section on solid flexagons (flexahedrons), pp 81 - 84).

~~Schattschneider, Doris & Wallace Walker, M.C. Escher Kaleidocycles, 0-906212-28-6, 76 pp, Tarquin Publications (background material and 10 cut and assemble models of 8 and 12 tetrahedra and one polyhedra. A slight printing error in the second edition forced the publisher to include a duplicate set of models).

~~Scholastic Magazine, The fold-'em-up send-'em-out Greeting Card Book, 0-590-10286- 9, 1975, 24 pp, Scholastic Magazine (some background, cut out and assemble models for two tetra and one hexaflexagon).