Lua APA (7ú heag.)

England, W. B. (1967). The purchasing system. R.D. Irwin.

Lua i Stíl Chicago (17ú heag.)

England, Wilbur B. The Purchasing System. Homewood, Ill.: R.D. Irwin, 1967.

Lua MLA (8ú heag.)

England, Wilbur B. The Purchasing System. R.D. Irwin, 1967.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.