Cita APA (7a ed.)

Huang, X., & Chen, J. (2006). On PTAS for planar graph problems.

Cita Chicago Style (17a ed.)

Huang, Xiuzhen, y Jianer Chen. On PTAS for Planar Graph Problems. 2006.

Cita MLA (8a ed.)

Huang, Xiuzhen, y Jianer Chen. On PTAS for Planar Graph Problems. 2006.