OSHA Whistleblower Investigation Manual, is available online at https://www.whistleblowers.gov/sites/wb/files/2019-06/AnnotatedWIM.pdf
CIGIE Quality Standards for Investigations, is available online at https://www.ignet.gov/sites/default/files/files/invprg1211appi.pdf
GAO Yellow Book, Government Auditing Standards, is available online at https://www.gao.g…