Roberts, F. S. (1978). Graph theory and its applications to problems of society. Society for Industrial and Applied Mathematics.
Citação do estilo Chicago (17ª ed.)Roberts, Fred S. Graph Theory and Its Applications to Problems of Society. Philadelphia: Society for Industrial and Applied Mathematics, 1978.
Citação MLA (9ª ed.)Roberts, Fred S. Graph Theory and Its Applications to Problems of Society. Society for Industrial and Applied Mathematics, 1978.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.