Gaya APA

-A, J, O. (2006). THE LEADERSHIP SKILLS HANDBOOK 50 ESSENTIAL SKILLS YOU NEED TO BE A LEADER (2). London: Kogan Page Limited.

Gaya MLA

-A, JO, OWEN. "THE LEADERSHIP SKILLS HANDBOOK 50 ESSENTIAL SKILLS YOU NEED TO BE A LEADER". 2 London: Kogan Page Limited, 2006. Text.