In other words what DATABASE FIELD MUST BE FOR form radios generated by bake

CAKEPHP 3
Using bake in CLI to fast develop an CRUD PHP app "My Library"
given a database structure of two tables books and users
how in create or edit form eg of books
1.
have radio buttons FOR SELECT ONE ONLY OF
A
E-Book | Paperback | Hardback
B
Read | Semi-Read | Just-Surveyed-It | UnRead

In other words What DATABASE FIELD MUST BE FOR bake CREATE THIS???