In Business English^x, Invitations^x

Hi, in my studing business english example letter, I'd like to have a discussion about an hypothetical interview invitation. For example if I recive an interview invitation for Fryday 11th of may, I reply in this way: Dear ***, With reference to your e-mail of May 5th, I...

Hello, in my studing business english example letter, I'd like to have a discussion about an hypothetical interview invitation. For example if I recive an interview invitation for Fryday 11th of may, I reply in this way: Dear ***, With reference your e-mail “Interview” of May 5th, first I want...

Does anybody happen to know a book about business English writing? I am always feeling panic when I write a formal invitation letter or a sublet contract, since I really have no idea what the formats they should have, and what terms or words I should use. I think I need some templates to learn...