Παραπομπή σε μορφή APA (7η εκδ.)

Mammana, C., & Villani, V. (1998). Perspectives on the teaching of geometry for the 21st century: An ICMI study. Kluwer Academic Publishers.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Mammana, Carmelo, και Vinicio Villani. Perspectives on the Teaching of Geometry for the 21st Century: An ICMI Study. Dordrecht Boston: Kluwer Academic Publishers, 1998.

Παραπομπή σε μορφή MLA (8th εκδ.)

Mammana, Carmelo, και Vinicio Villani. Perspectives on the Teaching of Geometry for the 21st Century: An ICMI Study. Kluwer Academic Publishers, 1998.