Essmann, H., & Pettenella, D. D. (2001). Forestry in Ukraine at the crossroads: Analyses and ideas for a Sustainable Development. Afisha.
芝加哥风格引文Essmann, H.-F, 与 D. Davide Pettenella. Forestry in Ukraine at the Crossroads: Analyses and Ideas for a Sustainable Development. Lviv: Afisha, 2001.
MLA引文Essmann, H.-F, 与 D. Davide Pettenella. Forestry in Ukraine at the Crossroads: Analyses and Ideas for a Sustainable Development. Afisha, 2001.
警告：这些引文格式不一定是100％准确.