Kula, E. (1988). The economics of forestry: Modern theory and practice. Timber Press.
芝加哥风格引文Kula, Erhun. The Economics of Forestry: Modern Theory and Practice. Portland, Or.: Timber Press, 1988.
MLA引文Kula, Erhun. The Economics of Forestry: Modern Theory and Practice. Timber Press, 1988.
警告：这些引文格式不一定是100％准确.