Hass, K. (1969). Creative salesmanship understanding essentials. George Press.
Chicagoスタイル(17版)引用形式Hass, K. Creative Salesmanship Understanding Essentials. London: George Press, 1969.
MLA(9版)引用形式Hass, K. Creative Salesmanship Understanding Essentials. George Press, 1969.
警告: この引用は必ずしも正確ではありません.