Von Fange, E. K. (1959). Professional creativity. Prentice-Hall.
Chicagoスタイル(17版)引用形式Von Fange, Eugene K. Professional Creativity. Englewood Cliffs, N.J.: Prentice-Hall, 1959.
MLA(8版)引用形式Von Fange, Eugene K. Professional Creativity. Prentice-Hall, 1959.
警告: この引用は必ずしも正確ではありません.