Strutt, P. (2010). Business grammar and usage: Business English. Pearson Education Limited.
Lua i Stíl Chicago (17ú heag.)Strutt, Peter. Business Grammar and Usage: Business English. Essex: Pearson Education Limited, 2010.
Lua MLA (9ú heag.)Strutt, Peter. Business Grammar and Usage: Business English. Pearson Education Limited, 2010.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.