APA Style

(NAMC), N, A, M, C. (). Math 1: Lower Elementary 6-9 (Copy) . United States: North American Montessori Center (NAMC).

MLA Style

(NAMC), North, American, Montessori, Center. "Math 1: Lower Elementary 6-9 (Copy)". United States: North American Montessori Center (NAMC), . Text.