Fritz, R. (2003). Hundred ways to bring out your best: Never underestimate yourself. Pustak Mahal.
Chicago Style aipamenaFritz, Roger. Hundred Ways to Bring Out Your Best: Never Underestimate Yourself. Delhi: Pustak Mahal, 2003.
MLA aipamenaFritz, Roger. Hundred Ways to Bring Out Your Best: Never Underestimate Yourself. Pustak Mahal, 2003.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.