Cita APA (7a ed.)

Chen, M. (2004). Grey systems: Theory and applications. Emerald Group Pub..

Cita Chicago Style (17a ed.)

Chen, Mian-Yun. Grey Systems: Theory and Applications. Bradford, West Yorkshire, England: Emerald Group Pub., 2004.

Cita MLA (8a ed.)

Chen, Mian-Yun. Grey Systems: Theory and Applications. Emerald Group Pub., 2004.