CONCERN, Inc. (Consultancy, Organization, Communications, Education & Research Network). (1992). Sangguniang kabataan primer: Book I-. Mary Jo Educational Supply.
Citazione stile Chigago Style (17a edizione)CONCERN, Inc. (Consultancy, Organization, Communications, Education & Research Network). Sangguniang Kabataan Primer: Book I-. Manila: Mary Jo Educational Supply, 1992.
Citatione MLA (9a ed.)CONCERN, Inc. (Consultancy, Organization, Communications, Education & Research Network). Sangguniang Kabataan Primer: Book I-. Mary Jo Educational Supply, 1992.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.