APA (7 वां संस्करण) प्रशस्ति पत्र

Zimmermann, W., & Cunningham, S. (1991). Visualization in teaching and learning mathematics. The Mathematical Association of America.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Zimmermann, Walter, और Steve Cunningham. Visualization in Teaching and Learning Mathematics. Washington, D.C: The Mathematical Association of America, 1991.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Zimmermann, Walter, और Steve Cunningham. Visualization in Teaching and Learning Mathematics. The Mathematical Association of America, 1991.