APA (7th ed.) Zitazioa
Spencer, R. (2007). Religion of peace?: Why Christianity is and Islam isn't. Regnery Pub..
Chicago Style (17th ed.) Zitazioa
Spencer, Robert. Religion of Peace?: Why Christianity Is and Islam Isn't. Washington, DC: Regnery Pub., 2007.
MLA (9th ed.) Zitazioa
Spencer, Robert. Religion of Peace?: Why Christianity Is and Islam Isn't. Regnery Pub., 2007.
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