APA-viite (7. p.)

Harvard Business Essentials. (2005). Time management: Increase your personal productivity and effectiveness. Harvard Business School Press.

Chicago-viite (17. p.)

Harvard Business Essentials. Time Management: Increase Your Personal Productivity and Effectiveness. Boston: Harvard Business School Press, 2005.

MLA-viite (9. p.)

Harvard Business Essentials. Time Management: Increase Your Personal Productivity and Effectiveness. Harvard Business School Press, 2005.