(1978). United States government manual. Office of the federal register National archives and records service general service administration.
استشهاد بنمط شيكاغوUnited States Government Manual. Washington: Office of the federal register National archives and records service general service administration, 1978.
MLA استشهادUnited States Government Manual. Office of the federal register National archives and records service general service administration, 1978.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.