APA aipamena

Roxas, G. M. (1963). The pork barrel system. Philippine Journal of Public Administration.

Chicago Style aipamena

Roxas, Gerardo M. "The Pork Barrel System." Philippine Journal of Public Administration 1963.

MLA aipamena

Roxas, Gerardo M. "The Pork Barrel System." Philippine Journal of Public Administration, 1963.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.