Παραπομπή σε μορφή APA (7η εκδ.)

Essmann, H., & Pettenella, D. D. (2001). Forestry in Ukraine at the crossroads: Analyses and ideas for a Sustainable Development. Afisha.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Essmann, H.-F, και D. Davide Pettenella. Forestry in Ukraine at the Crossroads: Analyses and Ideas for a Sustainable Development. Lviv: Afisha, 2001.

Παραπομπή σε μορφή MLA (9th εκδ.)

Essmann, H.-F, και D. Davide Pettenella. Forestry in Ukraine at the Crossroads: Analyses and Ideas for a Sustainable Development. Afisha, 2001.