(2001). Maling paggamit ng backpack, maaring maging sanhi ng chronic back pain. Kabayan.
Chicago Style (17th ed.) Citation"Maling Paggamit Ng Backpack, Maaring Maging Sanhi Ng Chronic Back Pain." Kabayan 2001.
MLA引文"Maling Paggamit Ng Backpack, Maaring Maging Sanhi Ng Chronic Back Pain." Kabayan, 2001.
警告：這些引文格式不一定是100％准確.