Kula, E. (1988). The economics of forestry: Modern theory and practice. Timber Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKula, Erhun. The Economics of Forestry: Modern Theory and Practice. Portland, Or.: Timber Press, 1988.
एमएलए (8वां संस्करण) प्रशस्ति पत्रKula, Erhun. The Economics of Forestry: Modern Theory and Practice. Timber Press, 1988.
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