A married couple who write books on policy, perhaps.

She had written three books and numerous articles on foreign policy.

Raab wrote his piece for the paper on British foreign policy.

He has written widely on economic and social policy.

Since this time Manning has continued to write on policy.

He has written 10 books on American foreign policy and the edited 12 more.

He has written several books on war, hunger issues, theology, and foreign policy.

During his career he wrote several books on foreign policy and education.

On the side, he wrote articles and books on economic policy.

He has also written several books on employment and economic policy.