MLA

Popkova, and Bruno S Sergi. Digital Economy: Complexity and Variety Vs. Rationality. Springer International Publishing, 2020.

APA

Popkova, P., & Sergi, B. S. (2020). Digital Economy: Complexity and Variety vs. Rationality. Springer International Publishing.

Chicago

Popkova, and Bruno S Sergi. Digital Economy: Complexity and Variety Vs. Rationality. : Springer International Publishing, 2020.