Elliot, A. (1992). Universal letter writer. Clarion.
Chicagoスタイル(17版)引用形式Elliot, Andrew. Universal Letter Writer. Surrey: Clarion, 1992.
MLA(9版)引用形式Elliot, Andrew. Universal Letter Writer. Clarion, 1992.
警告: この引用は必ずしも正確ではありません.
APA(7版)引用形式