APA-viite (7. p.)

Institut za gorata (B ulgarska akademi i a na naukite). (2001). Silva Balcanica. Forest Research Institute - Bulgarian Academy of Sciences (FRI-BAS).

Chicago-viite (17. p.)

Institut za gorata (B ulgarska akademi i a na naukite). Silva Balcanica. Sofia, Bulgaria: Forest Research Institute - Bulgarian Academy of Sciences (FRI-BAS), 2001.

MLA-viite (9. p.)

Institut za gorata (B ulgarska akademi i a na naukite). Silva Balcanica. Forest Research Institute - Bulgarian Academy of Sciences (FRI-BAS), 2001.