There are however numerous anomalies and with regard to printed reference sources in a wider (i.e. non-systems) context a more restrictive and formal meaning of the terms is usually implied.
Hata hivyo kuna mapungufu mbalimbali na kuhusiana na vyanzo kuchapishwa kumbukumbu katika pana (k.v. zisizo mifumo) mazingira haziwaruhusu na rasmi maana ya maneno ni kawaida kumaanisha.