How to add a translated combination of three separate Ancient Greek writings

[Sini]

I need to add to the database a Finnish collection of Xenophon's writings: 'Memorabilia,' 'Symposium,' and 'Apology of Socrates,' which are compilations by Xenophon concerning Socrates' speeches. The book's Finnish translator has translated these three original, Ancient Greek works by Xenophon into Finnish, and these translations have been published together in one book. How should I add this book to the database?

[Arenda]

It should be added as a new book.*

Only books with the same content should be combined, so a book containing 3 speeches should not be combined with editions that only contain one.

* Unless there are editions in other languages that also contain those 3 speeches. I've looked for an English version, and there doesn't seem to be one containing these 3 titles.

[Sini]

Thank you!