MLA

Garaschuk, and Andy Liu. Grade Five Competition From the Leningrad Mathematical Olympiad: 1979–1992. Springer International Publishing, 2020.

APA

Garaschuk, G., & Liu, A. (2020). Grade Five Competition from the Leningrad Mathematical Olympiad: 1979–1992. Springer International Publishing.

Chicago

Garaschuk, and Andy Liu. Grade Five Competition From the Leningrad Mathematical Olympiad: 1979–1992. : Springer International Publishing, 2020.