APA استشهاد

Peitgen, H. [. (1991). Fractals for the classroom: Strategic activities; 2 v. Springer-Verlag.

استشهاد بنمط شيكاغو

Peitgen, Heinz-otto [et...al]. Fractals for the Classroom: Strategic Activities; 2 V. New York: Springer-Verlag, 1991.

MLA استشهاد

Peitgen, Heinz-otto [et...al]. Fractals for the Classroom: Strategic Activities; 2 V. Springer-Verlag, 1991.