There are a billion different citation formats with their own rules. I 
don't think there is any simple answer to the question you ask.

On 10/11/2012 2:45 PM, William Gunn wrote:
> Hi list!
>
> I have a technical question about formatting citation output which
> some of you may have dealt with in the past. I see journal names and
> their abbreviations listed three different ways:
>
> ALL CAPS no periods:
> http://images.webofknowledge.com/WOK46/help/WOS/A_abrvjt.html
> Proper Case, with periods: http://www.lib.berkeley.edu/BIOS/j_abbr.html
> Proper Case, no periods: http://home.ncifcrf.gov/research/bja/journams_a.html
>
> As far as I'm aware, citations in published papers should always be
> proper case, but are there any cases where a journal should be cited
> without periods in the abbreviated form? I'm aware of the edge cases
> like PLOS, JAMA, BMJ, but what I'm wondering is if anyone knows of any
> instances where a journal which is normally abbreviated as Anal.
> Biochem. would instead be formatted as Anal Biochem (without periods)
> in the references list/bibliography for a paper?
>
> If anyone has dealt with this issue in the past, I'd love to hear what
> you came up with. Thanks!
>
>
> William Gunn
> +1 646 755 9862
> http://synthesis.williamgunn.org/about/
>
> Support free access to scientific journal articles arising from
> taxpayer-funded research: http://wh.gov/6TH
>
>