Geahča maid: Business Communications :
- Communicating un Business : a shoth course for business english students /
- Business Explorer 3 : Student's Book /
- Business Explorer 1 : Student Book /
- Harrap's guide to essential business english :redacción, Bárbara Campbell ; adaptado y traducido por Óscar Ramírez, Ricardo Sampedro Ingles - Español /
- Gramática comercial bilingüe = Bilingual business grammar /
- Business English and Communication /
Fáddá: INGLES COMERCIAL
- Business Explorer 3 : Student's Book /
- Communicating un Business : a shoth course for business english students /
- Business Explorer 1 : Student Book /
- Handbook of practical writing
- Strategies for technical writing: a rhetoric with readings
- Business Communications : international case studies in english /