Eastern Region (Nigeria). Ministry of Education. (1952). Education graphs and statistics. Printed by the Government Printer.
Chicago-referens (17:e uppl.)Eastern Region (Nigeria). Ministry of Education. Education Graphs and Statistics. Enugu: Printed by the Government Printer, 1952.
MLA-referens (8:e uppl.)Eastern Region (Nigeria). Ministry of Education. Education Graphs and Statistics. Printed by the Government Printer, 1952.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.