Παραπομπή σε μορφή APA (7η εκδ.)

Covey, S. (2011). Third alternative: Solving life's most difficult problems. Simon and Schuster.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Covey, Stephen. Third Alternative: Solving Life's Most Difficult Problems. London: Simon and Schuster, 2011.

Παραπομπή σε μορφή MLA (9th εκδ.)

Covey, Stephen. Third Alternative: Solving Life's Most Difficult Problems. Simon and Schuster, 2011.