Ronquillo, W. P. State of archaeological research in Cagayan valley, Northern Luzon, Philippines.
芝加哥风格引文Ronquillo, Wilfredo P. State of Archaeological Research in Cagayan Valley, Northern Luzon, Philippines.
MLA引文Ronquillo, Wilfredo P. State of Archaeological Research in Cagayan Valley, Northern Luzon, Philippines.
警告：这些引文格式不一定是100％准确.