a.kobasa, p. (2007). the americana annual 2007. Grolier Incorporated.
Chicago Style Citationa.kobasa, paul. The Americana Annual 2007. Grolier Incorporated, 2007.
MLA引文a.kobasa, paul. The Americana Annual 2007. Grolier Incorporated, 2007.
警告：這些引文格式不一定是100％准確.