APA (7 वां संस्करण) प्रशस्ति पत्र
Calca, P., & Belim, C. (2013). Image of U.S. presidential administrations: The cases of George W. Bush and Barack Obama. Lexington Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Calca, Patr�icia, और C�elia Belim. Image of U.S. Presidential Administrations: The Cases of George W. Bush and Barack Obama. Lanham, Maryland: Lexington Books, 2013.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Calca, Patr�icia, और C�elia Belim. Image of U.S. Presidential Administrations: The Cases of George W. Bush and Barack Obama. Lexington Books, 2013.
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