The first critical step in managing a successful project is to define the scope of the project clearly and fully. The scope statement should include the project's justifications and objectives. It should also describe the project's deliverables and include a budget. The article describes an eight step process for drafting successful scope statements.
Watson, Carol, "Effective Project Management: the Art of Creating Scope Statements" (2010). Articles, Chapters and Online Publications. Paper 25.