Arroyo, S. R. (1981). Business correspondence. Goodwill Trading.
Chicagoスタイル(17版)引用形式Arroyo, Sandra Rodriguez. Business Correspondence. Manila: Goodwill Trading, 1981.
MLA(9版)引用形式Arroyo, Sandra Rodriguez. Business Correspondence. Goodwill Trading, 1981.
警告: この引用は必ずしも正確ではありません.