Papa, A. V. (1999). Pro-gun group hits Ping plan. Philippine Daily Inquirer.
芝加哥风格引文Papa, Alcuin V. "Pro-gun Group Hits Ping Plan." Philippine Daily Inquirer 1999.
MLA引文Papa, Alcuin V. "Pro-gun Group Hits Ping Plan." Philippine Daily Inquirer, 1999.
警告：这些引文格式不一定是100％准确.