Norman, R. Z., & Roberts, F. S. (1970). Notes on combinatorial mathematics: A derivation of a measure of relative balance for signed digraphs and a characterization of extensive ratio systems. Rand Corporation.
Chicago Style (17th ed.) CitationNorman, Robert Z., and Fred S. Roberts. Notes on Combinatorial Mathematics: A Derivation of a Measure of Relative Balance for Signed Digraphs and a Characterization of Extensive Ratio Systems. Santa Monica, Calif.: Rand Corporation, 1970.
MLA (9th ed.) CitationNorman, Robert Z., and Fred S. Roberts. Notes on Combinatorial Mathematics: A Derivation of a Measure of Relative Balance for Signed Digraphs and a Characterization of Extensive Ratio Systems. Rand Corporation, 1970.
Warning: These citations may not always be 100% accurate.