APA (7th ed.) Citation

United States. Internal Revenue Service. Office of International Programs. (1989). Sourcebook on international travel: "the travel request package.". A/C International, Office of International Programs, IRS.

Chicago Style (17th ed.) Citation

United States. Internal Revenue Service. Office of International Programs. Sourcebook on International Travel: "The Travel Request Package.". Washington, D.C.: A/C International, Office of International Programs, IRS, 1989.

MLA (9th ed.) Citation

United States. Internal Revenue Service. Office of International Programs. Sourcebook on International Travel: "The Travel Request Package.". A/C International, Office of International Programs, IRS, 1989.