APA-referens

Chang, G., & Sederberg, T. W. (1997). Over and over again. Mathematical Association of America.

Chicago-stil citat

Chang, Gengzhe, och Thomas W. Sederberg. Over and over Again. [Washington, DC]: Mathematical Association of America, 1997.

MLA-referens

Chang, Gengzhe, och Thomas W. Sederberg. Over and over Again. Mathematical Association of America, 1997.