Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

Garey, Michael R., i David S. Johnson. Computers and Intractability: A Guide to the Theory of NP-completeness. New York ; Houndmills ; San Francisco: W. H. Freeman, 1979.

Cita MLA (8th ed.)

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