Crawford, R. P. (1985). Think for yourself: The first of the celebrated Crawford works in the field of creativity. Fraser.
Chicago-Zitierstil (17. Ausg.)Crawford, Robert Platt. Think for Yourself: The First of the Celebrated Crawford Works in the Field of Creativity. Burlington, Vermont: Fraser, 1985.
MLA-Zitierstil (9. Ausg.)Crawford, Robert Platt. Think for Yourself: The First of the Celebrated Crawford Works in the Field of Creativity. Fraser, 1985.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.