Balke,Ellen. (1999). Know yourself: Achieve your goals through better self-knowledge. Kogan Page.
Chicago Style aipamenaBalke,Ellen. Know Yourself: Achieve Your Goals Through Better Self-knowledge. New Delhi: Kogan Page, 1999.
MLA aipamenaBalke,Ellen. Know Yourself: Achieve Your Goals Through Better Self-knowledge. Kogan Page, 1999.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.