Manongdo, J. F. (2007). Increasing taxes, prices of tobacco will lesser its use - study. Manila Bulletin.
Lua i Stíl Chicago (17ú heag.)Manongdo, Jenny F. "Increasing Taxes, Prices of Tobacco Will Lesser Its Use - Study." Manila Bulletin 2007.
Lua MLA (9ú heag.)Manongdo, Jenny F. "Increasing Taxes, Prices of Tobacco Will Lesser Its Use - Study." Manila Bulletin, 2007.
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