Rummel, J. F., & Ballaine, W. C. (1963). Research methodology in business. Harper & row.
Dyfyniad Arddull ChicagoRummel, J. Francis, and Wesley C. Ballaine. Research Methodology in Business. New York: Harper & row, 1963.
Dyfyniad MLARummel, J. Francis, and Wesley C. Ballaine. Research Methodology in Business. Harper & row, 1963.
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