Renner, John W., author
Teaching science in the elementary school
Harper & Row, 1968
 Buku Teks
Victor, Edward, author
Science for the elementary school
Macmillan, 1966
 Buku Teks
Jarolimek, John, author
Social studies in elementary education
Macmillan, 1968
 Buku Teks
Webber, G. Cuthbert, author
Number concepts and geometry
Addison-Wesely, 1969
 Buku Teks
Thomas, David A.
Children, teachers, and mathematics / David A. Thomas
Allyn and Bacon, 1991
 Buku Teks
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