Bekon, J. (1998). In-service training needs of secondary school principals in the Sri Aman Divison as perceived by the principals and the school supervisors.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Bekon, Jenet. In-service Training Needs of Secondary School Principals in the Sri Aman Divison as Perceived by the Principals and the School Supervisors. 1998.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Bekon, Jenet. In-service Training Needs of Secondary School Principals in the Sri Aman Divison as Perceived by the Principals and the School Supervisors. 1998.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.