Reiko Yamamoto, The Effect of Cross-Curriculum of L1 and L2 on Elementary School Students’ Linguistic Proficiency: To Sympathize with Others. journal = {International Journal of Educational and Pedagogical Sciences}, [online]. World Academy of Science, Engineering and Technology. November 2018, vol. 133(1). 31 - 34 [viewed 20 September 2024]. Available from: https://publications.waset.org/pdf/10008349.