Citations and Source

Tetrads are not your standard document. I keep thinking of them as a poem. There are many tetrads in McLuhan's two posthumous books. There are also many scattered around the web. So I was looking for a way to cite and link both. This is what I've come up with.

For web or print, both have a title or name of a site. This becomes the source. There will also be a citation which is free form, but is meant to indicate publisher, page number, etc for print. The third field is URL, which obviously works for web source of tetrads. It will also contain the ISBN for books and my code will produce a link (or links) to a page for that book - probably to Amazon or BN.

Thanks to my literate "agent" for talking through this with me.