Digniin: tarjumaad toos ah Weydiinta mas'uul kama aha khaladaadka/tallaabooyinka la qaaday.
2014 NRA - Cutubka 8 - Habka Qiimaynta Khatarta Qaranka (pp.490-500)
Xukunka raacaya Module 3 Dhagaysi Hordhac ah 10ka Abriil 2024
INQ000068403 - Royal Academy of Engineering, Dib u eegis dibadeed ee Qiimaynta Khatarta Amniga Qaranka (NSRA) Habka - Talooyin loogu talagalay adkeysiga weyn, oo ku taariikhaysan Sebtembar 2021