* {{Cite book |last = Baron |first = Jill |coauthor= |year =2002 |title = Rocky Mountain futures: an ecological perspective|url =https://books.google.am/books?id=zxvFXkH0828C&lpg=PP1&dq=Rocky%20Mountains&pg=PP1#v=onepage&q&f=true |publisher=Island Press |isbn=1559639539 |postscript = <!-- Bot inserted parameter. Either remove it; or change its value to "." for the cite to end in a ".", as necessary. -->}}
* {{Cite book |last = Newby|first = Rick |coauthor= |year =2004 |title =The Rocky Mountain region |url =https://books.google.am/books?id=xv5ivm13_0oC&lpg=PA68&dq=Rocky%20Mountains&pg=PP1#v=onepage&q&f=true |publisher= Greenwood Press |isbn=031332817X |postscript = <!-- Bot inserted parameter. Either remove it; or change its value to "." for the cite to end in a ".", as necessary. --> }}
