(1999). Trade associations directory 1999. Department of Trade and Industry, Bureau of Domestic Trade.
Chicago-viite (17. p.)Trade Associations Directory 1999. Makati City: Department of Trade and Industry, Bureau of Domestic Trade, 1999.
MLA-viite (9. p.)Trade Associations Directory 1999. Department of Trade and Industry, Bureau of Domestic Trade, 1999.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.