Can I add a "pocketbook"?

[Heather]

I've added the following 16 page "pocketbook," but now I'm not sure if I should have. Robert Burns Love Songs The book can also be found at this website: http://www.quincetreepress.co.uk/pock... but doesn't have an ISBN. Is this considered a book, or should I remove it? I wasn't sure because I found a few other books that seem to be the same type from that website (for example Poems ). Thanks!

[rivka, Former Moderator]

Those look much like small-press chapbooks, which are fine.