توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Sygkelos, Y. (2011). Nationalism from the left: The Bulgarian Communist Party during the Second World War and the early post-war years. Brill.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Sygkelos, Yannis. Nationalism from the Left: The Bulgarian Communist Party During the Second World War and the Early Post-war Years. Leiden ; Boston: Brill, 2011.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

Sygkelos, Yannis. Nationalism from the Left: The Bulgarian Communist Party During the Second World War and the Early Post-war Years. Brill, 2011.