APA

Clayton S., Wills J. C., . (1997). Sharpen your team's skills in developing strategy. London: McGraw-Hill.

Chicago

Clayton Susan, Wills John C, . 1997. Sharpen your team's skills in developing strategy. London: McGraw-Hill.

Harvard

Clayton S., Wills J. C., . (1997). Sharpen your team's skills in developing strategy. London: McGraw-Hill.

MLA

Clayton Susan, Wills John C, . Sharpen your team's skills in developing strategy. London: McGraw-Hill. 1997.