Association for Supervision and Curriculum Development, Network, Inc, National Center for Improving Science Education (U.S.) Biological Sciences Curriculum Study, & Loucks-Horsley, S. (1990). Elementary school science for the 90's. Association for Supervision and Curriculum Development.
Citazione stile Chigago Style (17a edizione)Association for Supervision and Curriculum Development, Inc Network, National Center for Improving Science Education (U.S.) Biological Sciences Curriculum Study, e Susan Loucks-Horsley. Elementary School Science for the 90's. Alexandria, VA: Association for Supervision and Curriculum Development, 1990.
Citatione MLA (9a ed.)Association for Supervision and Curriculum Development, et al. Elementary School Science for the 90's. Association for Supervision and Curriculum Development, 1990.