Books can be attributed to "Anonymous" for several reasons:
* They are officially published under that name * They are traditional stories not attributed to a specific author * They are religious texts not generally attributed to a specific author
Books whose authorship is merely uncertain should be attributed to Unknown.
Novela estrambóticamente encratita donde Tomás va a evangelizar a la India pero entretenida, de los hechos atribuidos a Leucio Carino creo que es el más largo y el único que está completo.