De la Cruz, L. D. D., & De la Cruz, L. S. (1974). The "new" social studies for Philippine schools ([Second edition, revised].). Social Studies Publications.
Čikaški stil citiranja (17. izdanje)De la Cruz, Leonardo De Dios, i Luz Samonte De la Cruz. The "New" Social Studies for Philippine Schools. [Second edition, revised]. Manila: Social Studies Publications, 1974.
MLA način citiranja (9. izdanje)De la Cruz, Leonardo De Dios, i Luz Samonte De la Cruz. The "New" Social Studies for Philippine Schools. [Second edition, revised]. Social Studies Publications, 1974.
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