JOHNSON, Gerry - WHITTINGTON, Richard - SCHOLES, Kevan. Exploring strategy : text & cases. Whit the assistance of Steve Pyle. 9th ed. Harlow : FT Prentice Hall/Pearson, 2011. 773 s. ISBN 978-0-273-73202-0. [Copy count : 1, currently available 0, at library only 1]