Mierkiewics, D., & technical. (1978). Recent research concerning the development of spatial and geometric concepts. ERIC Clearinghouse for Science.
Цитирование в стиле Чикаго (17-е изд.)Mierkiewics, Diane, и technical. Recent Research Concerning the Development of Spatial and Geometric Concepts. Columbus: ERIC Clearinghouse for Science, 1978.
Цитирование MLA (9-е изд.)Mierkiewics, Diane, и technical. Recent Research Concerning the Development of Spatial and Geometric Concepts. ERIC Clearinghouse for Science, 1978.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.