Sinag-tala. (1978). Sinag-tala executive marketing factbook: Philippines, Southeast Asia (2nd ed.). Sinag-tala Pub.
Chicago-viite (17. p.)Sinag-tala. Sinag-tala Executive Marketing Factbook: Philippines, Southeast Asia. 2nd ed. Manila: Sinag-tala Pub, 1978.
MLA-viite (9. p.)Sinag-tala. Sinag-tala Executive Marketing Factbook: Philippines, Southeast Asia. 2nd ed. Sinag-tala Pub, 1978.
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