APA aipamena

Pickford, J. (2003). Mastering risk. Pearson.

Chicago Style aipamena

Pickford, James. Mastering Risk. Pearson, 2003.

MLA aipamena

Pickford, James. Mastering Risk. Pearson, 2003.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.