(1997). Science for all children a guide to improving elementary science education in your school district / National Science Resources Center, National Academy of Sciences, Smithsonian Institution. [electronic resource].
Цитирование в стиле Чикаго (17-е изд.)Science for All Children a Guide to Improving Elementary Science Education in Your School District / National Science Resources Center, National Academy of Sciences, Smithsonian Institution. [electronic Resource]. 1997.
Цитирование MLA (9-е изд.)Science for All Children a Guide to Improving Elementary Science Education in Your School District / National Science Resources Center, National Academy of Sciences, Smithsonian Institution. [electronic Resource]. 1997.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.