Webb, W. F. (1948). Foreign land and freshwater shells: From all parts of the world except the United states and Canada. St. Petersburg Printing.
芝加哥风格引文Webb, Walter Freeman. Foreign Land and Freshwater Shells: From All Parts of the World Except the United States and Canada. Florida: St. Petersburg Printing, 1948.
MLA引文Webb, Walter Freeman. Foreign Land and Freshwater Shells: From All Parts of the World Except the United States and Canada. St. Petersburg Printing, 1948.
警告：这些引文格式不一定是100％准确.