(2006). RP 17th happiest country survey. Manila Times.
Dyfyniad Arddull Chicago"RP 17th Happiest Country Survey." Manila Times 2006.
Dyfyniad MLA"RP 17th Happiest Country Survey." Manila Times, 2006.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.