Beesley, M. E., & Kettle, P. B. (1985). Improving railway financial performance: Measurement and management needs. Gower.
Chicago Style (17. basım) AtıfBeesley, M. E., ve Peter B. Kettle. Improving Railway Financial Performance: Measurement and Management Needs. Aldershot, Hampshire ; Brookfield, Vt.: Gower, 1985.
MLA (8th ed.) AtıfBeesley, M. E., ve Peter B. Kettle. Improving Railway Financial Performance: Measurement and Management Needs. Gower, 1985.
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