Buttery, R., Hurford, C., & Simpson, R. K. (1993). Audit in the public sector (2nd ed.). ICSA Pub.
Dyfyniad Arddull ChicagoButtery, Roger, Chris Hurford, and Robert K. Simpson. Audit in the Public Sector. 2nd ed. Hertfordshire, [Eng.]: ICSA Pub, 1993.
Dyfyniad MLAButtery, Roger, et al. Audit in the Public Sector. 2nd ed. ICSA Pub, 1993.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.