APA (7th ed.) Zitazioa
Sanjek, R. (2009). Gray Panthers. University of Pennyslvania Press.
Chicago Style (17th ed.) Zitazioa
Sanjek, Roger. Gray Panthers. Philadelphia: University of Pennyslvania Press, 2009.
MLA (9th ed.) Zitazioa
Sanjek, Roger. Gray Panthers. University of Pennyslvania Press, 2009.
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