APA (7e ed.) Bronvermelding

Otto, A. D., Caldwell, J. H., Lubinski, C. A., & Hancock, S. W. Developing essential understanding of multiplication and division for teaching mathematics in grades 3-5.

Chicago (17e ed.) Bronvermelding

Otto, Albert Dean, Janet H. Caldwell, Cheryl Ann Lubinski, en Sarah Wallus Hancock. Developing Essential Understanding of Multiplication and Division for Teaching Mathematics in Grades 3-5.

MLA (8e ed.) Bronvermelding

Otto, Albert Dean, et al. Developing Essential Understanding of Multiplication and Division for Teaching Mathematics in Grades 3-5.