Ginsburg, H. (1989). Children's arithmetic : how they learn it and how you teach it / Herbert P. Ginsburg: How they learn it and how you teach it (2nd ed.). PRO-ED.
Chicago Style (17th ed.) CitationGinsburg, Herbert. Children's Arithmetic : How They Learn It and How You Teach It / Herbert P. Ginsburg: How They Learn It and How You Teach It. 2nd ed. Austin, Tex.: PRO-ED, 1989.
MLA (9th ed.) CitationGinsburg, Herbert. Children's Arithmetic : How They Learn It and How You Teach It / Herbert P. Ginsburg: How They Learn It and How You Teach It. 2nd ed. PRO-ED, 1989.
Warning: These citations may not always be 100% accurate.