APA Style

Gausman, D. (2008). Montessori Elementary 6-12 Classroom Guide (Copy) . Unites States: North American Montessori Center (NAMC).

MLA Style

Gausman, Dale. "Montessori Elementary 6-12 Classroom Guide (Copy)". Unites States: North American Montessori Center (NAMC), 2008. Text.