מצפה הכוכבים פאלומר – הבדלי גרסאות

*{{citeCite book | first =David Livingston | last =Crawford | authorlink = | coauthors = | year = 1966| month = | title =The Construction of large telescopes | chapter = | editor = | others = | edition = | pages = | publisher =Academic Press | location = London, New York | id = | url = }} [http://www.worldcat.org/title/construction-of-large-telescopes/oclc/1093049&referer=brief_results OCLC 1093049]

*{{citeCite book | first = Rod | last = Mollise | authorlink = | coauthors = | year = 2006 | month = | title =[http://books.google.com/books?id=Z0mvZk0s_TMC&pg=PA238&dq=palomar+observatory&lr=&cd=107#v=onepage&q=palomar%20observatory&f=false The Urban Astronomer's Guide: a Walking Tour of the Cosmos for City Sky Watchers] | chapter = | editor = | others = | edition = | pages = | publisher =Springer | location =Berlin| isbn = | url = }} {{ISBN|1846282179}}/{{ISBN|9781846282171}}; {{ISBN|1846282160}}/{{ISBN|9781846282164}} [http://www.worldcat.org/title/urban-astronomers-guide/oclc/299995003 OCLC 299995003]

*{{citeCite book | first = T.V. | last = Watterson | authorlink = | coauthors = | year = 1941 | month = | title =Palomar Observatory | chapter = | editor = | others = | edition = | pages = | publisher = Frye & Smith | location =San Diego, California | isbn = | url = }}[http://www.worldcat.org/title/palomar-observatory/oclc/6327013 OCLC 6327013]</div>