, S., & , D. D. A. (2010). American foreign policy under president George W. Bush and Barack Obama: From hard power to soft power. [Yogyakarta] : Universitas Gadjah Mada.
استشهاد بنمط شيكاغو, SETYOWATI, و Drs. Dafri Agussalim. American Foreign Policy Under President George W. Bush and Barack Obama: From Hard Power to Soft Power. [Yogyakarta] : Universitas Gadjah Mada, 2010.
MLA استشهاد, SETYOWATI, و Drs. Dafri Agussalim. American Foreign Policy Under President George W. Bush and Barack Obama: From Hard Power to Soft Power. [Yogyakarta] : Universitas Gadjah Mada, 2010.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.