The Penguin Group is owned by Pearson plc , the international media group .
Putnam 's Sons , Grosset & Dunlap , New American Library , Penguin , Philomel , Riverhead Books and Viking , among others .
The Philomel   is owned by Pearson plc , the international media group .
Putnam 's Sons , Grosset & Dunlap , New American Library , Penguin , Philomel , Riverhead Books and Viking , among others .