Colina, A. L. I. Davao City launches interim bus system. IN Provincial News. Manila Bulletin.
芝加哥风格引文Colina, Antonio L. IV. "Davao City Launches Interim Bus System. IN Provincial News." Manila Bulletin .
MLA引文Colina, Antonio L. IV. "Davao City Launches Interim Bus System. IN Provincial News." Manila Bulletin, .
警告：这些引文格式不一定是100％准确.