Simmons Christopher. (1942). Letterhead & Logo Design 9. Oxford.
Chicagoスタイル(17版)引用形式Simmons Christopher. Letterhead & Logo Design 9. USA: Oxford, 1942.
MLA(9版)引用形式Simmons Christopher. Letterhead & Logo Design 9. Oxford, 1942.
警告: この引用は必ずしも正確ではありません.