APA (7th ed.) Zitazioa
ebrary, Inc, Proctor, A. P., & Waleford, J. T. (2009). Maintaining homeland security. Nova Science.
Chicago Style (17th ed.) Zitazioa
ebrary, Inc, Alan P. Proctor, eta Jason T. Waleford. Maintaining Homeland Security. New York: Nova Science, 2009.
MLA (9th ed.) Zitazioa
ebrary, Inc, et al. Maintaining Homeland Security. Nova Science, 2009.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.