Sources

"English is not Enough"- http://proquest.umi.com/pqdweb?did=2015789651&sid=1&Fmt=3&clientId=148420&RQT=309&VName=PQD -Effects of Foreign Language on Reading and Math Scores

Foreign Language Learning: An Early Start- ERIC Digests [] CAL: Digests: Language Learning Strategies: An Update []