Sinag-tala. (1982). Sinag-tala executive marketing factbook: Philippines, Southeast Asia (3rd ed.). Sinagtala.
Chicago Style aipamenaSinag-tala. Sinag-tala Executive Marketing Factbook: Philippines, Southeast Asia. 3rd ed. Manila: Sinagtala, 1982.
MLA aipamenaSinag-tala. Sinag-tala Executive Marketing Factbook: Philippines, Southeast Asia. 3rd ed. Sinagtala, 1982.
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