This page contains a reference example for a report by a government agency.
National Cancer Institute. (2019). Taking time: Support for people with cancer (NIH Publication No. 18-2059). U.S. Department of Health and Human Services, National Institutes of Health. https://www.cancer.gov/publications/patient-education/takingtime.pdf
Government report references are covered in the seventh edition APA Style manuals in the Publication Manual Section 10.4 and the Concise Guide Section 10.4
This guidance has been revised from the 6th edition.