MLA 2008/09 Update!
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Basic Style for Citations of Electronic Sources (Including Online Databases)
Here are some common features you should try and find before citing electronic sources in MLA style. Not every Web page will provide all of the following information. However, collect as much of the following information as possible both for your citations and for your research notes:
* Author and/or editor names (if available)
* Article name in quotation marks (if applicable)
* Title of the Website, project, or book in italics. (Remember that some Print publications have Web publications with slightly different names. They may, for example, include the additional information or otherwise modified information, like domain names [e.g. .com or .net].)
* Any version numbers available, including revisions, posting dates, volumes, or issue numbers.
* Publisher information, including the publisher name and publishing date.
* Take note of any page numbers (if available).
* Date you accessed the material.
* URL (if required, or for your own personal reference).
http://owl.english.purdue.edu/owl/resource/747/12/
I'll let those who actually live and breathe styles pick up the conversation from here. Not sure how to help you.
I'm not opposed to seeing a publisher field for newspaper, journal, and magazine articles; they only don't have them because styles weren't known to require publisher information for items of these types.
As I've said elsewhere, it's more like a "source" or a "repository."
WRT to "source" - can we agree then to map "Library Catalogue" to a variable in csl? I really don't care about the name, but "source" sounds fine to me.