Changes

* ISBN

* ISBN

One problem is when almost none of this information is available.  On-line source, in particular, often have no author, no date of publication, and sometimes no title!

One problem is when almost none of this information is available.  On-line sources, in particular, often have no author, no date of publication, and sometimes no title!

I would prefer that we develop our own citation style to cater for all the citations we might want to use (which could be almost any combination of those listed above, except where they are obviously mutually exclusive), but at the same time I don't want to do anything too different to citation styles used in the wider world.

I would prefer that we develop our own citation style to cater for all the citations we might want to use (which could be almost any combination of those listed above, except where they are obviously mutually exclusive), but at the same time I don't want to do anything too different to citation styles used in the wider world.