Peitgen, H., & Jurgens, H. .. a. (1991). Fractals for the classroom. Springer-Verlag.
Chicago Edition CitationPeitgen, Heinz-otto, i Harmut ...[et al.] Jurgens. Fractals for the Classroom. New York: Springer-Verlag, 1991.
Cita MLAPeitgen, Heinz-otto, i Harmut ...[et al.] Jurgens. Fractals for the Classroom. Springer-Verlag, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.