Goh, D. (1997). Step into the future with nothing: Achievment through self- motivation. Sterling.
Chicago Style aipamenaGoh, David. Step into the Future with Nothing: Achievment Through Self- Motivation. New Delhi: Sterling, 1997.
MLA aipamenaGoh, David. Step into the Future with Nothing: Achievment Through Self- Motivation. Sterling, 1997.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.