WILLIAMS, E., & SHUARD, H. (1970). Elementary mathematics today: A resource for teachersgrades 1-8. Addison-Wesley Pub. Co.
Chicagoスタイル(17版)引用形式WILLIAMS, Elizabeth, , Hilary SHUARD. Elementary Mathematics Today: A Resource for Teachersgrades 1-8. Menlo Park: Addison-Wesley Pub. Co, 1970.
MLA(9版)引用形式WILLIAMS, Elizabeth, , Hilary SHUARD. Elementary Mathematics Today: A Resource for Teachersgrades 1-8. Addison-Wesley Pub. Co, 1970.
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