Ratzinger, J., & Pera, M. (2006). Sin raices: : Europa, relativismo, cristianismo, islam. Peninsula.
Chicago Style (17th ed.) CitationRatzinger, Joseph, and Marcello Pera. Sin Raices: : Europa, Relativismo, Cristianismo, Islam. Barcelona: Peninsula, 2006.
MLA (9th ed.) CitationRatzinger, Joseph, and Marcello Pera. Sin Raices: : Europa, Relativismo, Cristianismo, Islam. Peninsula, 2006.
Warning: These citations may not always be 100% accurate.