Green ringtones trill, howl, hoot, screech.. Philippine daily Inquirer.
Chicago Style (17th ed.) Citation"Green Ringtones Trill, Howl, Hoot, Screech.." Philippine Daily Inquirer .
MLA (9th ed.) Citation"Green Ringtones Trill, Howl, Hoot, Screech.." Philippine Daily Inquirer, .
Warning: These citations may not always be 100% accurate.