I am a senior in college, and I have to write an introduction business letter and a reference business letter for my class to get a good grade. I need a sample of each one of them as quickly as possible so I can complete my work for graduation.

There are tons of samples on the Internet. Please Google the keywords for what you need.

GIVE me a sample? So, what have you been doing for YOUR work.

A college senior who demands this sort of thing isn't going to last 2 months at his first job.

There is no easy ride here. Use your noggin !