Romulo, C. P. Philippine proposals.
芝加哥风格引文Romulo, Carlos P. Philippine Proposals.
MLA引文Romulo, Carlos P. Philippine Proposals.
警告：这些引文格式不一定是100％准确.
APA引文
Romulo, C. P. Philippine proposals.
芝加哥风格引文Romulo, Carlos P. Philippine Proposals.
MLA引文Romulo, Carlos P. Philippine Proposals.