CONCERN, Inc. (Consultancy, Organization, Communications, Education & Research Network). (1992). Sangguniang kabataan primer: Book I-. Mary Jo Educational Supply.
Citace podle Chicago (17th ed.)CONCERN, Inc. (Consultancy, Organization, Communications, Education & Research Network). Sangguniang Kabataan Primer: Book I-. Manila: Mary Jo Educational Supply, 1992.
Citace podle MLA (9th ed.)CONCERN, Inc. (Consultancy, Organization, Communications, Education & Research Network). Sangguniang Kabataan Primer: Book I-. Mary Jo Educational Supply, 1992.
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