Proofread a book

I am looking for a professional proofreader to review and edit my non-fiction book. The ideal candidate should have experience in proofreading non-fiction books and be able to maintain a professional tone throughout the text.

Skills and experience required:
- Strong attention to detail
- Excellent grammar and spelling
- Familiarity with non-fiction writing
- Ability to maintain a consistent tone
- Understanding of proper citation and referencing styles