Chapter from Edward Gibbon's "The Decline and Fall of the Roman Empire," tells of Pertinax's election, attempted reforms, and murder.
Entry for Pertinax at the Catholic Encyclopedia.
Provides an overview of the life and reign of the Emperor Pertinax who ruled for just 187 days.
Wikipedia article on the life of Pertinax.
Offers a biography of the life of the Roman Emperor Pertinax.