APA aipamena

Shelton, R., & Richard Shelton. (2007). The. Pittsburgh, Pa: University of Pittsburgh Press.

Chicago Style aipamena

Shelton, Richard, và Richard Shelton. The. Pittsburgh, Pa: University of Pittsburgh Press, 2007.

MLA aipamena

Shelton, Richard, và Richard Shelton. The. Pittsburgh, Pa: University of Pittsburgh Press, 2007.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.