Google has added a new schema markup type for books in their developer center. Aaron Bradley posted about it on Google+ explaining that this was just added on December 3, 2016.

It is currently a closed beta, but you can apply to be part of it by filling out this form.

These “book actions” make “Google Search an entry point for discovering books and authors, enabling Search users to quickly buy the books that they find directly from Search results,” Google said.

Here is what the card looks like, including the buy e-book feature:

Aaron Bradly added:

Purchasing books seems to be purely organic and no AdWords ads built into them, yet.

You can learn more about it in the developer center.

Forum discussion at Google+.