APA (7th ed.) Zitazioa

Barr, R. D. (2013). Building a culture of hope: Enriching schools with optimism and opportunity. Solution Tree Press.

Chicago Style (17th ed.) Zitazioa

Barr, Robert D. Building a Culture of Hope: Enriching Schools with Optimism and Opportunity. Bloomington, Ind.: Solution Tree Press, 2013.

MLA (9th ed.) Zitazioa

Barr, Robert D. Building a Culture of Hope: Enriching Schools with Optimism and Opportunity. Solution Tree Press, 2013.