Beckwith, L., Jr. (1983). The impact of title I, esea programs on the time management of elementary school principals in area II of the St. Louis public school. St. Louis University.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Beckwith, Lynn, Jr. The Impact of Title I, Esea Programs on the Time Management of Elementary School Principals in Area II of the St. Louis Public School. [S.l]: St. Louis University, 1983.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Beckwith, Lynn, Jr. The Impact of Title I, Esea Programs on the Time Management of Elementary School Principals in Area II of the St. Louis Public School. St. Louis University, 1983.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.