Essmann, H., & Pettenella, D. D. (2001). Forestry in Ukraine at the crossroads: Analyses and ideas for a Sustainable Development. Afisha.
Chicago Style (17th ed.) ZitazioaEssmann, H.-F, eta D. Davide Pettenella. Forestry in Ukraine at the Crossroads: Analyses and Ideas for a Sustainable Development. Lviv: Afisha, 2001.
MLA (9th ed.) ZitazioaEssmann, H.-F, eta D. Davide Pettenella. Forestry in Ukraine at the Crossroads: Analyses and Ideas for a Sustainable Development. Afisha, 2001.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.