Wenninger, M. J. (1975). Polyhedron models for the classroom (2d ed.). National Council of Teachers of Mathematics.
Chicago-viite (17. p.)Wenninger, Magnus J. Polyhedron Models for the Classroom. 2d ed. Reston, VA: National Council of Teachers of Mathematics, 1975.
MLA-viite (9. p.)Wenninger, Magnus J. Polyhedron Models for the Classroom. 2d ed. National Council of Teachers of Mathematics, 1975.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.