Pacpaco, R. P., & Jannaral, J. I. (2000). Robin, posibleng gawing hostage ng Abu Sayyaf / Ryan Ponce Pacpaco at Julmunir I. Jannaral. Kabayan.
芝加哥风格引文Pacpaco, Ryan Ponce, 与 Julmunir I. Jannaral. "Robin, Posibleng Gawing Hostage Ng Abu Sayyaf / Ryan Ponce Pacpaco at Julmunir I. Jannaral." Kabayan 2000.
MLA引文Pacpaco, Ryan Ponce, 与 Julmunir I. Jannaral. "Robin, Posibleng Gawing Hostage Ng Abu Sayyaf / Ryan Ponce Pacpaco at Julmunir I. Jannaral." Kabayan, 2000.
警告：这些引文格式不一定是100％准确.