KING, F., & CREE, D. A. (1986). English business letters: Commercial correspondence forforeign students.--Ed. New. Longman.
Lua i Stíl Chicago (17ú heag.)KING, F.W, agus D. Ann CREE. English Business Letters: Commercial Correspondence Forforeign Students.--Ed. New. England: Longman, 1986.
Lua MLA (9ú heag.)KING, F.W, agus D. Ann CREE. English Business Letters: Commercial Correspondence Forforeign Students.--Ed. New. Longman, 1986.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.