Padron:Greenwood&Earnshaw2nd
Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (ika-2nd (na) edisyon). Butterworth-Heinemann. ISBN 978-0-08-037941-8.{{cite book}}: CS1 maint: date auto-translated (link)
Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (ika-2nd (na) edisyon). Butterworth-Heinemann. ISBN 978-0-08-037941-8.{{cite book}}: CS1 maint: date auto-translated (link)
