Ministry of Education and Science of Ukraine, Sumy State University, & Economic Research Centre. (2007). Економіка для екології: "Economics for Ecology" ISCS'2007.
Cita Chicago (17th ed.)Ministry of Education and Science of Ukraine, Sumy State University, i Economic Research Centre. Економіка для екології: "Economics for Ecology" ISCS'2007. 2007.
Cita MLA (9th ed.)Ministry of Education and Science of Ukraine, et al. Економіка для екології: "Economics for Ecology" ISCS'2007. 2007.
Atenció: Aquestes cites poden no estar 100% correctes.