I am writing my bachelor thesis and want to cite the ISO C++ standard. However I am unable to get my hands on a copy of the standard, since the library does not have a physical or digital copy. I do get the information i need from the working drafts and there isn't much of a change in the chapters i need.

Citing ISO 14882:2014 would be my preferred solution, but since i don't have the document, should i cite a late working draft of the 2014 standard or even the current working draft? Do you have other ideas?