Cita APA (7th ed.)

Riddle, D. I., & Sutcliffe, L. G. (1997). Successful services exporting: A handbook for firms, associations and governments. ITC.

Cita Chicago (17th ed.)

Riddle, Dorothy I., i Leni G. Sutcliffe. Successful Services Exporting: A Handbook for Firms, Associations and Governments. Geneva: ITC, 1997.

Cita MLA (9th ed.)

Riddle, Dorothy I., i Leni G. Sutcliffe. Successful Services Exporting: A Handbook for Firms, Associations and Governments. ITC, 1997.