<link href='https://fonts.googleapis.com/css?family=Source+Sans+Pro:400,600,700,900,400italic&subset=latin,latin-ext' rel='stylesheet' type='text/css'>

<link href='https://fonts.googleapis.com/css?family=Source+Sans+Pro:400,600,700,900,400italic&amp;subset=latin,latin-ext' rel='stylesheet' type='text/css'>

Use &amp; rather than & in font url
Use &amp; rather than & in font url
