Não informado. (1959). British journal of non-destructive testing. Non-Destructive Testing Society of Great Britain.
Chicago (17e ed.) BronvermeldingNão informado. British Journal of Non-destructive Testing. Leigh-on-Sea, Inglaterra: Non-Destructive Testing Society of Great Britain, 1959.
MLA (8e ed.) BronvermeldingNão informado. British Journal of Non-destructive Testing. Non-Destructive Testing Society of Great Britain, 1959.
Let op: Deze citaties zijn niet altijd 100% accuraat.