Παραπομπή σε μορφή APA (7η εκδ.)

Ausiello, G., Crescenzi, P., & Gambosi, G. (1999). Complexity and approximation: Combinatorial optimization problems and their approximability properties. Springer.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Ausiello, G., P. Crescenzi, και G. Gambosi. Complexity and Approximation: Combinatorial Optimization Problems and Their Approximability Properties. Berlin: Springer, 1999.

Παραπομπή σε μορφή MLA (8th εκδ.)

Ausiello, G., et al. Complexity and Approximation: Combinatorial Optimization Problems and Their Approximability Properties. Springer, 1999.