Crawford, R. P. (1970). The techniques of creative thinking: How to use your ideas to achieve success (Second printing.). Fraser Publishing Co.
Chicago-Zitierstil (17. Ausg.)Crawford, Robert Platt. The Techniques of Creative Thinking: How to Use Your Ideas to Achieve Success. Second printing. Burlington, Vt: Fraser Publishing Co, 1970.
MLA-Zitierstil (9. Ausg.)Crawford, Robert Platt. The Techniques of Creative Thinking: How to Use Your Ideas to Achieve Success. Second printing. Fraser Publishing Co, 1970.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.