(1998). Davao City Water District: A pioneer in the water supply industry. Philippine Panorama.
Chicago Style (17th ed.) Citation"Davao City Water District: A Pioneer in the Water Supply Industry." Philippine Panorama 1998.
MLA引文"Davao City Water District: A Pioneer in the Water Supply Industry." Philippine Panorama, 1998.
警告：這些引文格式不一定是100％准確.