Manongdo, J. F. (2007). Increasing taxes, prices of tobacco will lesser its use - study. Manila Bulletin.
Chicago-viite (17. p.)Manongdo, Jenny F. "Increasing Taxes, Prices of Tobacco Will Lesser Its Use - Study." Manila Bulletin 2007.
MLA-viite (9. p.)Manongdo, Jenny F. "Increasing Taxes, Prices of Tobacco Will Lesser Its Use - Study." Manila Bulletin, 2007.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.