Dyfyniad APA

Hass, K. (1969). Creative salesmanship understanding essentials. George Press.

Dyfyniad Arddull Chicago

Hass, K. Creative Salesmanship Understanding Essentials. London: George Press, 1969.

Dyfyniad MLA

Hass, K. Creative Salesmanship Understanding Essentials. George Press, 1969.

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