Goh, D. (1997). Step into the future with nothing: Achievment through self- motivation. Sterling.
Cita Chicago (17th ed.)Goh, David. Step into the Future with Nothing: Achievment Through Self- Motivation. New Delhi: Sterling, 1997.
Cita MLA (9th ed.)Goh, David. Step into the Future with Nothing: Achievment Through Self- Motivation. Sterling, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.