Nigeria & Rapson, R. N. (1957). Report of the grading teams of the former Nigerian Railway and Nigeria Marine: And notification of the conclusions of the Government of the Federation thereon. Federal Government Printer.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Nigeria و R. N. Rapson. Report of the Grading Teams of the Former Nigerian Railway and Nigeria Marine: And Notification of the Conclusions of the Government of the Federation Thereon. Lagos: Federal Government Printer, 1957.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Nigeria و R. N. Rapson. Report of the Grading Teams of the Former Nigerian Railway and Nigeria Marine: And Notification of the Conclusions of the Government of the Federation Thereon. Federal Government Printer, 1957.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.