APA Style

NAMC, ., Montessori, M. (2008). Math 3: Pratical Applications And Geometry: Upper Elemntary 9-12 . America: North American Montessori Center.

MLA Style

NAMC, ., Montessori, Maria. "Math 3: Pratical Applications And Geometry: Upper Elemntary 9-12". America: North American Montessori Center, 2008. Text.