APA aipamena

STEELE, P. T. (1999). Business negotiation a practical workbook. Gower.

Chicago Style aipamena

STEELE, Paul T. Business Negotiation a Practical Workbook. Gower, 1999.

MLA aipamena

STEELE, Paul T. Business Negotiation a Practical Workbook. Gower, 1999.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.