"Joint Travel Regulations". Retrieved 2024-09-03. https://www.travel.dod.mil/Policy-Regulations/Joint-Travel-Regulations/
GSA Per Diem FAQ Archived 2009-05-09 at the Wayback Machine https://www.gsa.gov/Portal/gsa/ep/contentView.do?pageTypeId=8203&faq=yes&contentType=GSA_OVERVIEW&contentId=16365
"Foreign Per Diem Rates by Location". aoprals.state.gov. Retrieved September 5, 2024. https://aoprals.state.gov/web920/per_diem.asp/
"Extended TDY". defensetravel.osd.mil. Archived from the original on 2011-07-22. When the TDY exceeds 45 days, you may receive a portion of your reimbursement every 30 days, to help pay your living expenses (particularly your GOVCC bill). This is known as a Scheduled Partial Payment (SPP). You must request, and the AO must approve, SPP before the trip begins. https://web.archive.org/web/20110722215259/http://www.defensetravel.osd.mil/ppWBT/traveler_before/extended_TDY.htm
Extended TDY - Details Archived 2009-07-30 at the Wayback Machine, NSSC Customer Service, NSSC Customer Satisfaction & Communications Office https://www.nssc.nasa.gov/portal/site/customerservice/menuitem.8486bd3e37ff9d500a0c69104dd72749/
"AIR FORCE INSTRUCTION 10-2701" (PDF). [permanent dead link] https://www.gocivilairpatrol.com/media/cms/AFI_102701_20470E7786898.pdf