Butterworth. Baseball and Rhetorics of Purity. The University of Alabama Press.
Chicago Style (17th ed.) ZitazioaButterworth. Baseball and Rhetorics of Purity. The University of Alabama Press.
MLA (9th ed.) ZitazioaButterworth. Baseball and Rhetorics of Purity. The University of Alabama Press.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.