READY DOUGLAS A. (1993). TRENDS IN EXECUTIVE EDUCATION: TOWARDS A SYSTEMS APPROACH TO EXECUTIVE DEVELOPMENT AND PLANNING. INTERNATIONAL LABOUR ORGANIZATION.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)READY DOUGLAS A. TRENDS IN EXECUTIVE EDUCATION: TOWARDS A SYSTEMS APPROACH TO EXECUTIVE DEVELOPMENT AND PLANNING. GENEVA: INTERNATIONAL LABOUR ORGANIZATION, 1993.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)READY DOUGLAS A. TRENDS IN EXECUTIVE EDUCATION: TOWARDS A SYSTEMS APPROACH TO EXECUTIVE DEVELOPMENT AND PLANNING. INTERNATIONAL LABOUR ORGANIZATION, 1993.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.