* {{cite book | last=Crabtree | first=Robert H. | last2=Mingos | first2=D. M. P. | title=Comprehensive organometallic chemistry III | publisher=Elsevier | publication-place=Amsterdam London | date=2007 | isbn=978-0-08-045047-6}}
<ref name="y204">{{cite book | last=Crabtree | first=Robert H. | last2=Mingos | first2=D. M. P. | title=Comprehensive organometallic chemistry III | publisher=Elsevier | publication-place=Amsterdam London | date=2007 | isbn=978-0-08-045047-6 | page=}}</ref>