APA-referens (7:e uppl.)
Erugo, S. (2019). Introduction to Nigerian labour law: Contract of employment and labour practice (Second edition.). Princeton & Associates Publishing Co. Ltd..
Chicago-referens (17:e uppl.)
Erugo, Sam. Introduction to Nigerian Labour Law: Contract of Employment and Labour Practice. Second edition. Lagos: Princeton & Associates Publishing Co. Ltd., 2019.
MLA-referens (9:e uppl.)
Erugo, Sam. Introduction to Nigerian Labour Law: Contract of Employment and Labour Practice. Second edition. Princeton & Associates Publishing Co. Ltd., 2019.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.