APA (7th ed.) Zitazioa

Johnson, G. (2011). Elements of the utopian. Davies Group.

Chicago Style (17th ed.) Zitazioa

Johnson, Greg. Elements of the Utopian. Aurora, Colo.: Davies Group, 2011.

MLA (9th ed.) Zitazioa

Johnson, Greg. Elements of the Utopian. Davies Group, 2011.