32 C.F.R. § 1292.5
(a) Security regulations and orders will be promulgated by any of the following means:
(b) Written directives and orders will contain so much of the following statement as is pertinent:
This order (directive, bulletin, etc.) is issued pursuant to section 21, Internal Security Act of 1950, 50 U.S.C. 797, DoD Directive 5200.8, DLAR 5710.1, (directive issued by the Head of a DLA field activity subordinate to HQ DLA).