APA引文

Tracy, B. (2003). Focal point: A proven system to simplify your life, double your productivity, and achieve all your goals (International edition.). AMACOM.

Chicago Style (17th ed.) Citation

Tracy, Brian. Focal Point: A Proven System to Simplify Your Life, Double Your Productivity, and Achieve All Your Goals. International edition. New York, NY: AMACOM, 2003.

MLA引文

Tracy, Brian. Focal Point: A Proven System to Simplify Your Life, Double Your Productivity, and Achieve All Your Goals. International edition. AMACOM, 2003.