Davis, R. B. (1964). Discovery in mathematics: A text for teachers containing topics, techniques, methods, and materials for a supplementary course in introductory mathematics and including the student discussion guide, with answers. Addison-Wesley.
Lua i Stíl Chicago (17ú heag.)Davis, Robert Benjamin. Discovery in Mathematics: A Text for Teachers Containing Topics, Techniques, Methods, and Materials for a Supplementary Course in Introductory Mathematics and Including the Student Discussion Guide, with Answers. Reading, Mass: Addison-Wesley, 1964.
Lua MLA (9ú heag.)Davis, Robert Benjamin. Discovery in Mathematics: A Text for Teachers Containing Topics, Techniques, Methods, and Materials for a Supplementary Course in Introductory Mathematics and Including the Student Discussion Guide, with Answers. Addison-Wesley, 1964.