APA aipamena

Shipler, D. K. (2004). The working poor: Invisible in America. New York: Vintage Books.

Chicago Style aipamena

Shipler, David K. The Working Poor: Invisible in America. New York: Vintage Books, 2004.

MLA aipamena

Shipler, David K. The Working Poor: Invisible in America. New York: Vintage Books, 2004.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.