Friedel, B. The Peal Family: On the Beginnings of a Democratic Art and Aesthetics in America / Bettina Friedel. Democracy and the arts in the United States.(1996).
Chicago-Zitierstil (17. Ausg.)Friedel, Bettina. "The Peal Family: On the Beginnings of a Democratic Art and Aesthetics in America / Bettina Friedel." Democracy and the Arts in the United States.(1996) .
MLA-Zitierstil (8. Ausg.)Friedel, Bettina. "The Peal Family: On the Beginnings of a Democratic Art and Aesthetics in America / Bettina Friedel." Democracy and the Arts in the United States.(1996), .
警告：這些引文格式不一定是100％准確.