(1968). Populations: A science unit for the primary grades (Trial ed.). Science Curriculum Improvement Study.
Style de citation Chicago (17e éd.)Populations: A Science Unit for the Primary Grades. Trial ed. Berkeley, CA: Science Curriculum Improvement Study, 1968.
Style de citation MLA (9e éd.)Populations: A Science Unit for the Primary Grades. Trial ed. Science Curriculum Improvement Study, 1968.
Attention : ces citations peuvent ne pas être correctes à 100%.