APA aipamena

Debono Edward. (2000). Six Thinking Hats. Penguin.

Chicago Style aipamena

Debono Edward. Six Thinking Hats. Penguin, 2000.

MLA aipamena

Debono Edward. Six Thinking Hats. Penguin, 2000.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.