APA (7th ed.) Zitazioa
Burns, M. (1996). 50 problem-solving lessons: Grades 1-6. Math Solutions Publications ; Distributed by Cuisenaire Company of America.
Chicago Style (17th ed.) Zitazioa
Burns, Marilyn. 50 Problem-solving Lessons: Grades 1-6. Sausalito, CA : White Plains, NY: Math Solutions Publications ; Distributed by Cuisenaire Company of America, 1996.
MLA (9th ed.) Zitazioa
Burns, Marilyn. 50 Problem-solving Lessons: Grades 1-6. Math Solutions Publications ; Distributed by Cuisenaire Company of America, 1996.
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