APA-referens (7:e uppl.)

Petrova, O., & Borovichev, E. (2019). ECOTOURISM IN THE FENNOSCANDIAN GREEN BELT. Transactions of the Karelian Research Centre of the Russian Academy of Sciences, 4, . https://doi.org/10.17076/them1014

Chicago-referens (17:e uppl.)

Petrova, Olga, och Evgeny Borovichev. "ECOTOURISM IN THE FENNOSCANDIAN GREEN BELT." Transactions of the Karelian Research Centre of the Russian Academy of Sciences 4 (2019). https://doi.org/10.17076/them1014.

MLA-referens (9:e uppl.)

Petrova, Olga, och Evgeny Borovichev. "ECOTOURISM IN THE FENNOSCANDIAN GREEN BELT." Transactions of the Karelian Research Centre of the Russian Academy of Sciences, 4, 2019, https://doi.org/10.17076/them1014.