Nichols, A. E. (1950). Survey of the secondary schools of Sierra Leone: With recommendations concerning their curricula. Govt. Printer.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Nichols, Arthur Eastwood. Survey of the Secondary Schools of Sierra Leone: With Recommendations Concerning Their Curricula. Freetown, Sierra Leone: Govt. Printer, 1950.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Nichols, Arthur Eastwood. Survey of the Secondary Schools of Sierra Leone: With Recommendations Concerning Their Curricula. Govt. Printer, 1950.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.