Παραπομπή σε μορφή APA (7η εκδ.)

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.

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (8th εκδ.)

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