BLAKE R R. (1985). MANAGERIAL GRID. JAICO PUBLISHING HOUSE.
Lua i Stíl Chicago (17ú heag.)BLAKE R R. MANAGERIAL GRID. BOMBAY: JAICO PUBLISHING HOUSE, 1985.
Lua MLA (9ú heag.)BLAKE R R. MANAGERIAL GRID. JAICO PUBLISHING HOUSE, 1985.
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