Hill, P. Pricing for Profit. Kogan Page.
Lua i Stíl Chicago (17ú heag.)Hill, Peter. Pricing for Profit. Kogan Page.
Lua MLA (9ú heag.)Hill, Peter. Pricing for Profit. Kogan Page.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.