Der Weg zurück
In 1979, Sarmiento co-authored a book, "The Road Back to Democracy", with former Philippine President Diosdado Macapagal and three others. Later that year, he and Manuel Concordia published a book, "Ang Demokrasya sa Pilipinas", which led to their arrest on charges of subversion and inciting to sedition. They were later placed under house arrest.