Não informado. (2004). CIWM Scientific & Technical Review. IWM Business Services.
Chicago (17e ed.) BronvermeldingNão informado. CIWM Scientific & Technical Review. Northampton, Inglaterra: IWM Business Services, 2004.
MLA (8e ed.) BronvermeldingNão informado. CIWM Scientific & Technical Review. IWM Business Services, 2004.
Let op: Deze citaties zijn niet altijd 100% accuraat.