Flag Research Center (Winchester, Mass.). (1964). When was the United States first recognized? The Flag Research Center.
Chicago-Zitierstil (17. Ausg.)Flag Research Center (Winchester, Mass.). When Was the United States First Recognized? Winchester, Mass.: The Flag Research Center, 1964.
MLA-Zitierstil (8. Ausg.)Flag Research Center (Winchester, Mass.). When Was the United States First Recognized? The Flag Research Center, 1964.
警告:这些引文格式不一定是100%准确.