I am told that the correct translation of;

"The man who reads the book is his father"

is the following;

"Kitap okuyan adam onun babasidir"

Shouldn´t it be Kitabi...etc. since the the book is the object of what is being read ?

Obviously there is something about the object marker I am not following.

"The man who reads the book is his father"

"Kitabı okuyan adam onun babasidir"

or shortly

"Kitabı okuyan babası"

Here, there is a certain book we talk about.

---

"The man who reads a book is his father"

"Kitap okuyan adam onun babasidir"

Now, there is only an ordinary any book we talk about.

Many Thanks. This is agrees with my understanding of the rule.