Cita APA (7th ed.)

Hassler, W. W. (2010). The first day at Gettysburg: Crisis at the crossroads. University of Alabama Press.

Cita Chicago (17th ed.)

Hassler, Warren W. The First Day at Gettysburg: Crisis at the Crossroads. Tuscaloosa, Ala.: University of Alabama Press, 2010.

Cita MLA (9th ed.)

Hassler, Warren W. The First Day at Gettysburg: Crisis at the Crossroads. University of Alabama Press, 2010.