What to include in the Chicago demand letter? Illinois Legal Aid Online provides a guided interview called an Easy Form that will help you fill out the forms.Use our Easy Form programs to help you create the forms you need. The Chicago Manual of Style, like both MLA and APA, defers to The Bluebook for legal citations. All forms below with a "fillable icon" are documents that you can open "on-line", fill in the appropriate fields and then print on your printer.