Lua APA (7ú heag.)

Mason, R. D. (1978). Programmed learning aid for business and consumer mathematics. Learning Systems.

Lua i Stíl Chicago (17ú heag.)

Mason, Robert D. Programmed Learning Aid for Business and Consumer Mathematics. Homewood, Ill: Learning Systems, 1978.

Lua MLA (9ú heag.)

Mason, Robert D. Programmed Learning Aid for Business and Consumer Mathematics. Learning Systems, 1978.

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