Roberts, F. S. (1978). Graph theory and its applications to problems of society. Society for Industrial and Applied Mathematics.
Cita Chicago (17th ed.)Roberts, Fred S. Graph Theory and Its Applications to Problems of Society. Philadelphia: Society for Industrial and Applied Mathematics, 1978.
Cita MLA (9th ed.)Roberts, Fred S. Graph Theory and Its Applications to Problems of Society. Society for Industrial and Applied Mathematics, 1978.
Atenció: Aquestes cites poden no estar 100% correctes.