Looking for Resources on Writing a Proposal

Hello,

I am looking for suggestions on books, websites or whatever you may have that would help me learn how to write a proposal. The proposal is for a service that I wish to provide to an established business.

Your assistance would be greatly appreciated.

Sincerely,
Gehanna

Ah! Thanks.

I came across this site earlier but, it was having some server issues. Looks like it is working fine now.

Sincerely,
Gehanna