(1968). Populations: A science unit for the primary grades (Trial ed.). Science Curriculum Improvement Study.
Chicagoスタイル(17版)引用形式Populations: A Science Unit for the Primary Grades. Trial ed. Berkeley, CA: Science Curriculum Improvement Study, 1968.
MLA(9版)引用形式Populations: A Science Unit for the Primary Grades. Trial ed. Science Curriculum Improvement Study, 1968.
警告: この引用は必ずしも正確ではありません.