Não informado. Chemical abstracts. Formula index: Index of ring systems. American Chemical Society.
Chicago (17e ed.) BronvermeldingNão informado. Chemical Abstracts. Formula Index: Index of Ring Systems. Columbus, Ohio: American Chemical Society.
MLA (8e ed.) BronvermeldingNão informado. Chemical Abstracts. Formula Index: Index of Ring Systems. American Chemical Society.
Let op: Deze citaties zijn niet altijd 100% accuraat.