Robertson, G. P. (1999). Standard soil methods long term ecological research. Oxford University Press.
芝加哥风格引文Robertson, G. Philip. Standard Soil Methods Long Term Ecological Research. New York: Oxford University Press, 1999.
MLA引文Robertson, G. Philip. Standard Soil Methods Long Term Ecological Research. Oxford University Press, 1999.
警告：这些引文格式不一定是100％准确.