Getting company logo from LinkedIn api

am using linked-in API for getting some information from linked-in. so
here i using like this

@response =
@access_token.get(‘http://api.linkedin.com/v1/people/~:(id,phone-numbers,first-name,last-name,skills,positions:(company:(name,id)))’,
‘x-li-format’ => ‘json’).

so i need to get the company logo from my current and previous
companies.
how to add the logo in the above URL…?

Thanks
amruby