Franklin

MLA

Gallup, Alec. The Gallup Poll Cumulative Index : Public Opinion, 1935-1997. Wilmington, Del.: Scholarly Resources, 1999.

APA

Gallup, A. (1999). The Gallup poll cumulative index : public opinion, 1935-1997. Wilmington, Del.: Scholarly Resources.

Chicago

Gallup, Alec. The Gallup Poll Cumulative Index: Public Opinion, 1935-1997. Wilmington, Del.: Scholarly Resources, 1999.