PUNCH Nigeria Limited. (2010). Managing a successful small scale business. Spectrum Books.
Chicago-referens (17:e uppl.)PUNCH Nigeria Limited. Managing a Successful Small Scale Business. Spectrum Books, 2010.
MLA-referens (9:e uppl.)PUNCH Nigeria Limited. Managing a Successful Small Scale Business. Spectrum Books, 2010.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.