APA (7th ed.) Citation

LANCASTER, G. (1993). The 20% factor: You, your life, your skills, your job immediate achievable improvements. Kogan Page.

Chicago Style (17th ed.) Citation

LANCASTER, Graham. The 20% Factor: You, Your Life, Your Skills, Your Job Immediate Achievable Improvements. London: Kogan Page, 1993.

MLA (8th ed.) Citation

LANCASTER, Graham. The 20% Factor: You, Your Life, Your Skills, Your Job Immediate Achievable Improvements. Kogan Page, 1993.