Хемијска веза — разлика између измена

* {{Cite book | ref = harv | title=Valency and bonding| publisher=Cambridge |year=2005| author1=Weinhold, F.|author2= Landis, C. |isbn=978-0-521-83128-4|pages=96-100}}

* {{Cite book | ref= harv|last=Atkins| first = Peter | author2last2 = Loretta Jones | first2 = Loretta | title = Chemistry: Molecules, Matter and Change | publisher = W. H. Freeman & Co. |year=1997| location = New York |isbn=978-0-7167-3107-8|pages=294-295}}