MLA

Popkova, Elena G, and Bruno S Sergi. Geo-economy of the Future : Sustainable Agriculture and Alternative Energy. Cham: Springer International Publishing AG, 2022.

APA

Popkova, E. G, & Sergi, B. S. (2022). Geo-Economy of the Future : Sustainable Agriculture and Alternative Energy. Cham: Springer International Publishing AG.

Chicago

Popkova, Elena G., and Bruno S Sergi. Geo-Economy of the Future : Sustainable Agriculture and Alternative Energy. Cham: Springer International Publishing AG, 2022.