Παραπομπή σε μορφή APA (7η εκδ.)

Garey, M. R., & Johnson, D. S. (1979). Computers and intractability: A guide to the theory of NP-completeness. W.H.Freeman and Company.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Garey, Michael R., και David S. Johnson. Computers and Intractability: A Guide to the Theory of NP-completeness. New York: W.H.Freeman and Company, 1979.

Παραπομπή σε μορφή MLA (8th εκδ.)

Garey, Michael R., και David S. Johnson. Computers and Intractability: A Guide to the Theory of NP-completeness. W.H.Freeman and Company, 1979.