Cita APA (7a ed.)

Berge, C., & Chvátal, V. (1984). Topics on perfect graphs. North-Holland.

Cita Chicago Style (17a ed.)

Berge, C., y V. Chvátal. Topics on Perfect Graphs. Amsterdam: North-Holland, 1984.

Cita MLA (9a ed.)

Berge, C., y V. Chvátal. Topics on Perfect Graphs. North-Holland, 1984.