Gaya APA

Gritsenko, D., Kiiski, T. (2014). A Review of Russian Ice-Breaking Tariff Policy on the Northern Sea Route 1991 – 2014 (ResearchGate). Finlandia: ResearchGate.

Gaya MLA

Gritsenko, Daria., Kiiski, Tuomas. "A Review of Russian Ice-Breaking Tariff Policy on the Northern Sea Route 1991 – 2014". ResearchGate Finlandia: ResearchGate, 2014. Article.