Advances in Mathematical Economics Volume 20
  MLA
  Kusuoka, Shigeo; Maruyama, Toru, and Toru Maruyama. Advances In Mathematical Economics Volume 20. Springer Singapore, 2016.
  APA
  Kusuoka, T., & Maruyama, T. (2016). Advances in Mathematical Economics Volume 20. Springer Singapore.
  Chicago
  Kusuoka, Shigeo; Maruyama, Toru, and Toru Maruyama. Advances In Mathematical Economics Volume 20. : Springer Singapore, 2016.