MLA

Kato, Kazuya, Sampei Usui, and Sampei Usui. Classifying Spaces of Degenerating Polarized Hodge Structures. Princeton University Press, 2009.

APA

Kato, K., Usui, S., & Sampei Usui, S. Usui. (2009). Classifying Spaces of Degenerating Polarized Hodge Structures. Princeton University Press.

Chicago

Kato, Kazuya, Sampei Usui, and Sampei Usui. Classifying Spaces of Degenerating Polarized Hodge Structures. : Princeton University Press, 2009.