Flores, A., Dougherty, B. J., Everett, L., & Sophian, C. Developing essential understanding of number and numeration for teaching mathematics in prekindergarten - grade 2 (3a ed., reimpresión.).
Цитирование в стиле Чикаго (17-е изд.)Flores, Alfinio, Barbara J. Dougherty, Louis Everett, и Catherine Sophian. Developing Essential Understanding of Number and Numeration for Teaching Mathematics in Prekindergarten - Grade 2. 3a ed., reimpresión.
Цитирование MLA (8-е изд.)Flores, Alfinio, et al. Developing Essential Understanding of Number and Numeration for Teaching Mathematics in Prekindergarten - Grade 2. 3a ed., reimpresión.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.