Barbisan, C., Concari, L., Rodríguez, M., & Urrestarazu, J. Snap!: Pupil's Book 3. An English Course for Younger Learners (1a. ed.). Heinemann Educational Books.
Chicagoスタイル(17版)引用形式Barbisan, C., L. Concari, M. Rodríguez, , J. Urrestarazu. Snap!: Pupil's Book 3. An English Course for Younger Learners. 1a. ed. London: Heinemann Educational Books.
MLA(9版)引用形式Barbisan, C., et al. Snap!: Pupil's Book 3. An English Course for Younger Learners. 1a. ed. Heinemann Educational Books.
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