I'm using the Amazon Product Advertising Ruby API (amazon-ecs) library. I have a list of some "vips" and I need to know if they are also the book's writer. So I need to know how can I do a ItemSearch by author name.
$response = $amazonEcs->returnType(1)
->responseGroup('Large')
->optionalParameters(array('ItemPage' => 1))
->category('Books')
->page(1)
->author($author_name);
How would I accomplish this?