Phelps, G. R. (2003). Handbook of time management: Working smarter getting more done with less effort, time and stress. Crest Pub. House.
Cita Chicago (17th ed.)Phelps, Graham Roberts. Handbook of Time Management: Working Smarter Getting More Done with Less Effort, Time and Stress. New Delhi: Crest Pub. House, 2003.
Cita MLA (9th ed.)Phelps, Graham Roberts. Handbook of Time Management: Working Smarter Getting More Done with Less Effort, Time and Stress. Crest Pub. House, 2003.
Atenció: Aquestes cites poden no estar 100% correctes.