The following reference list examples follow APA 7 guidelines.
Under Secretary of Defense for Acquisition, Technology, and Logistics. (2018, August 31). The defense acquisition system (DOD Directive 5000.1). https://www.esd.whs.mil/Portals/54/Documents/DD/issuances/dodd/500001p.pdf
U.S. Department of Defense. (2020, April 30). Department of Defense annual report on sexual assault in the military, Fiscal year 2019 (No. D-A4BC881). https://media.defense.gov/2020/Apr/30/2002291660/-1/-1/1/1_DEPARTMENT_OF_DEFENSE_FISCAL_YEAR_2019_ANNUAL_REPORT_ON_SEXUAL_ASSAULT_IN_THE_MILITARY.PDF
See APA 7, Section 10.4 for information on citing government and other reports.
Takia, T. (2013). Adoption of the national information exchange model within the Department of Defense [Memorandum]. http://dodcio.defense.gov/Portals/0/Documents/2013-03-28%20Adoption%20of%20the%NIEM%20within%20the%20DoD.pdf