@Flux@das_g Nerd fact: this joke could be more accurate by leaving the volume field blank 😄 In sociology at least, doing a "sitography" is a recent practice for ethnographical approaches – you need to properly tag your entries tho, you don't want to mix that with academic research.
For example, if you want to cite a public organigram, or how a squat presents itself – that's what your sitography is about.
But the "volume" field ("No. 211") would be irrelevant. Page number tho? Unlike the volume number, it's a more contextual locator, in the sense that BibLaTeX isn't a quotes database – you locate it in the paper body.
@oceane Pretending to assume that xkcd.com/221 was a scientific publication and cite-able research was actually intended to be part of the joke.
But yeah, I didn't look up any particular citation style, rather just pieced one together from what came to mind. Where would the issue number of a periodical publication not canonically collected into volumes (e.g. a daily newspaper or monthly non-scientific magazine, thus without several-issues-spanning page number ranges) go?
@Flux@das_g As I said – page number? It's a web page.
That's the most intuitive answer I can give. You would then semantically treat XKCD as a large, single document.
I'm not considered as a good, or even as a promising student. (They're wrong, because research and free software are both radical approaches to knowledge production. Getting funding from Microsoft might not even be worth it at the university scale.) I'm just digging BibLaTeX and GNU project stuff (Skribilo, Orgdownetc.)