APA (7e ed.) Bronvermelding

Goldenberg, E. P., Douglas H., C., Dougherty, B. J., & Zbiek, R. M. Developing essential understanding of geometry for teaching mathematics in prekindergarten - grade 2.

Chicago (17e ed.) Bronvermelding

Goldenberg, Ernest Paul, Clements Douglas H., Barbara J. Dougherty, en Rose Mary Zbiek. Developing Essential Understanding of Geometry for Teaching Mathematics in Prekindergarten - Grade 2.

MLA (8e ed.) Bronvermelding

Goldenberg, Ernest Paul, et al. Developing Essential Understanding of Geometry for Teaching Mathematics in Prekindergarten - Grade 2.