Groot, H. C. (2011). Peace Corps Alumni Foundation for Philippine Development. Bulletin of the American Historical Collection.
芝加哥风格引文Groot, Hans C. "Peace Corps Alumni Foundation for Philippine Development." Bulletin of the American Historical Collection 2011.
MLA引文Groot, Hans C. "Peace Corps Alumni Foundation for Philippine Development." Bulletin of the American Historical Collection, 2011.
警告：这些引文格式不一定是100％准确.