Bibliography

Hobbs Martyn, Keddle Julia Starr. Commerce 1. Oxford University Press. Student's Book

Hobbs Martyn, Keddle Julia Starr. Commerce 1. Oxford University Press. Teacher's Book

Virkus D. Toots N. Let's Start Buisness. Tallinn. TEA Publishers

Volpen Teresa, Clapton Peter. Commercially Speaking. Oxford University Press. Student's Book

Volpen Teresa, Clapton Peter. Commercially Speaking. Oxford University Press. Teacher's Book

Walden John T. The Bible of Business Letters. Delta Publishing

http://www.manufacturingweekly.com/tools-you-can-use-vendor-tally-sheet/

http://www.slideshare.net/englishforyou2/claims-and-complaints

http://www.youtube.com/watch?v=umoAIQT3E8M