//=preg_replace('/[^a-z0-9]/', '', strtolower($formats[0]))?>//=$formats[0] ?>
Professional English in use. by: McKeown, Arthur, et al. Published: (2011)
//=preg_replace('/[^a-z0-9]/', '', strtolower($formats[0]))?>//=$formats[0] ?>
Test your English vocabulary in use by: Bethell, George, et al. Published: (2003)