Final answer:
When citing classified Directives in English, the classification should be annotated after the title or source of the Directive using the appropriate classification label.
Step-by-step explanation:
When citing classified Directives in English, the classification should be annotated after the title or source of the Directive. This is typically done by using the appropriate classification label, such as 'Confidential', 'Secret', or 'Top Secret'.
For example, a citation for a classified Directive might look like this: 'Directive Title', Secret'.
It is important to properly include the classification when citing classified Directives to maintain the confidentiality and security of the information.