Evans, W. H. (1902). Agricultural investigations in the island possessions of the United States. [s.n.].
芝加哥风格引文Evans, Walter Harrison. Agricultural Investigations in the Island Possessions of the United States. Washington: [s.n.], 1902.
MLA引文Evans, Walter Harrison. Agricultural Investigations in the Island Possessions of the United States. [s.n.], 1902.
警告：这些引文格式不一定是100％准确.