KOONTZ, H. (1976). Management: Systems And Contingency Analysis Of Managerial Functions Harold Koontz And Cyril O' Donnell. McGraw-Hill.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKOONTZ, Harold. Management: Systems And Contingency Analysis Of Managerial Functions Harold Koontz And Cyril O' Donnell. McGraw-Hill, 1976.
एमएलए (8वां संस्करण) प्रशस्ति पत्रKOONTZ, Harold. Management: Systems And Contingency Analysis Of Managerial Functions Harold Koontz And Cyril O' Donnell. McGraw-Hill, 1976.
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