(1963). Material objects: A science unit for primary grades ; teacher's manual (Trial ed.). Science Curriculum Improvement Study.
Цитирование в стиле Чикаго (17-е изд.)Material Objects: A Science Unit for Primary Grades ; Teacher's Manual. Trial ed. Berkeley, CA: Science Curriculum Improvement Study, 1963.
Цитирование MLA (9-е изд.)Material Objects: A Science Unit for Primary Grades ; Teacher's Manual. Trial ed. Science Curriculum Improvement Study, 1963.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.