APA-referens (7:e uppl.)

Blessing, C. W., & Pollock, H. M. (1911). Examination book in American history and civics. New York Education Co..

Chicago-referens (17:e uppl.)

Blessing, Charles Winne, och Horatio M. Pollock. Examination Book in American History and Civics. Albany: New York Education Co., 1911.

MLA-referens (8:e uppl.)

Blessing, Charles Winne, och Horatio M. Pollock. Examination Book in American History and Civics. New York Education Co., 1911.