Cita APA (7th ed.)

Garey, M. R., & Johnson, D. S. (1979). Computers and intractability: A guide to the theory of NP-Completeness (27a. ed.). W. H. Freeman and Company.

Cita Chicago (17th ed.)

Garey, Michael R., i David S. Johnson. Computers and Intractability: A Guide to the Theory of NP-Completeness. 27a. ed. Nueva York: W. H. Freeman and Company, 1979.

Cita MLA (9th ed.)

Garey, Michael R., i David S. Johnson. Computers and Intractability: A Guide to the Theory of NP-Completeness. 27a. ed. W. H. Freeman and Company, 1979.