How Can I downlaod the latest PDF version library reference ?

Hi everyone,
I want to download the pdf version library reference from [http://docs.nvidia.com/cuda/#axzz4dcsNbYNP][/documents], but I cann’t find the correct link, every time I clicked on ‘pdf’ tag and I went to this page [http://docs.nvidia.com/][/home]
Thankyou!