Bell, M. (1980). The salesman in the field: Conditions of work and employment of commercial travellers and representatives. International Labour Office.
Citace podle Chicago (17th ed.)Bell, Michael. The Salesman in the Field: Conditions of Work and Employment of Commercial Travellers and Representatives. Geneva: International Labour Office, 1980.
Citace podle MLA (8th ed.)Bell, Michael. The Salesman in the Field: Conditions of Work and Employment of Commercial Travellers and Representatives. International Labour Office, 1980.
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