Gray, J. S. (1992). Manual of methods in aquatic environment research. Rome: FAO.
Trích dẫn kiểu ChicagoGray, John S. Manual of Methods in Aquatic Environment Research. Rome: FAO, 1992.
MLA引文Gray, John S. Manual of Methods in Aquatic Environment Research. Rome: FAO, 1992.
警告：这些引文格式不一定是100％准确.