(1968). United States government correspondence manual. U.S. Government Printing Office.
Chicagoスタイル(17版)引用形式United States Government Correspondence Manual. Washington: U.S. Government Printing Office, 1968.
MLA(9版)引用形式United States Government Correspondence Manual. U.S. Government Printing Office, 1968.
警告: この引用は必ずしも正確ではありません.