Copying and pasting question

[anksta]

I write a lot of articles for my job and that involves reading a lot. Sometimes we use quotes and whatnot from other articles and I noticed that a lot of sites manage to include a link to their own article when you copy from theirs, like this:

Lewis Godfrey, 23, suffered such horrendous injuries that doctors pronounced him dead twice. The smash had left him so badly injured his insides were left strewn across the road and he was rushed to hospital with his body parts held together in a blanket.

Read more: http://www.dailymail.co.uk/health/a...-makes-miraculous-recovery.html#ixzz2CCIHmpNy
Follow us: @MailOnline on Twitter | DailyMail on Facebook

Our content ends up strewn across the internet like most but we haven't got whatever it is that links you to the article on your site plus your Facebook page and all that jazz.

Surely it's just a simple piece of code embedded somewhere? Was hoping someone could tell me.

Cheers