Kula, E. (1988). The economics of forestry: Modern theory and practice. Timber Press.
Lua i Stíl Chicago (17ú heag.)Kula, Erhun. The Economics of Forestry: Modern Theory and Practice. Portland, Or.: Timber Press, 1988.
Lua MLA (8ú heag.)Kula, Erhun. The Economics of Forestry: Modern Theory and Practice. Timber Press, 1988.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.