توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Verra, G. J. (1994). International account management: An organizational dilemma : An explorative study within the field of international business to business marketing. Drukkerij Elinkwijk BV.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Verra, Gerben Jan. International Account Management: An Organizational Dilemma : An Explorative Study Within the Field of International Business to Business Marketing. Utrecht: Drukkerij Elinkwijk BV, 1994.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Verra, Gerben Jan. International Account Management: An Organizational Dilemma : An Explorative Study Within the Field of International Business to Business Marketing. Drukkerij Elinkwijk BV, 1994.