APA Style

Walsh, C. (2003). Key Management Ratios : The 100 Ratios Every Manager Needs to Know (4th Edition) (4). London: Prentice Hall.

MLA Style

Walsh, Ciaran. "Key Management Ratios : The 100 Ratios Every Manager Needs to Know (4th Edition)". 4 London: Prentice Hall, 2003. Text.