APA
Lapid-Bogda G., . (2007). What type of leader are you? : using the Enneagram system to identify and grow your leadership strengths and achieve maximum success. New York: McGraw-Hill.
Chicago
Lapid-Bogda Ginger, . 2007. What type of leader are you? : using the Enneagram system to identify and grow your leadership strengths and achieve maximum success. New York: McGraw-Hill.
Harvard
Lapid-Bogda G., . (2007). What type of leader are you? : using the Enneagram system to identify and grow your leadership strengths and achieve maximum success. New York: McGraw-Hill.
MLA
Lapid-Bogda Ginger, . What type of leader are you? : using the Enneagram system to identify and grow your leadership strengths and achieve maximum success. New York: McGraw-Hill. 2007.