Adding ebook not kindle edition

[Pao]

Hi everybody,
I have some questions about ebook editions that are not kindle version.

Is it possible to add free ebook in GR from sites like Project Gutenber or the Italian Liber Liber? They don't have ISBN10, ISBN13 or ASIN so I don't know if it's possible.
These are two examples
- book on GR Fatalità and link on Liber LIber: http://www.liberliber.it/online/autor...
- editions on GR https://www.goodreads.com/work/editio... and link on Gutenberg https://www.gutenberg.org/ebooks/4223

Moreover if I read an ebook bought from a site different from Amazon and Barnes&Nobles, like Kobo, I have to choose ebook for the format, haven't I?

Thanks.

[Sandra]

"Moreover if I read an ebook bought from a site different from Amazon and Barnes&Nobles, like Kobo, I have to choose ebook for the format, haven't I?"

Yes Pao.

[Pao]

Sandra wrote: ""Moreover if I read an ebook bought from a site different from Amazon and Barnes&Nobles, like Kobo, I have to choose ebook for the format, haven't I?"

Yes Pao."

Thank you Sandra for your answer.

Hope that someone can help me even with the first doubt.

[Renske]

An ISBN or ASIN is not required for adding a book (There are also print books without ISBN)

[Pao]

Renske wrote: "An ISBN or ASIN is not required for adding a book (There are also print books without ISBN)"

Thanks Renske, I made an attempt: this is the edition The Mystery of a Hansom Cab I added, I followed this Pussy and Doggy Tales as example.

I didn't fill the page field because I can't find this information.
Is it correct?