The bad Popes

E. R. Chamberlin

1969

Studies in the Roman controversy

H. J. Clayton

1914

The papal prince

Paolo Prodi

1987

Studies in church history

Henry Charles Lea

1869

The growth of papal government in the Middle Ages

Walter Ullmann

1955

Pope John Paul II and the Catholic restoration

Paul Bede Johnson

1981

The church and the churches

Johann Joseph Ignaz von Döllinger

1862

The Papal State in the thirteenth century

Daniel Philip Waley, Daniel Waley

1961

La question romaine

Edmond About

1859

Premiers temps de l'état pontifical.

Louis Duchesne

1908

Innocent III

Jane E. Sayers

1994

Select mediaeval documents and other material, illustrating the history of church and empire, 754 A.D.-1254 A.D

Mathews, Shailer

1900

Catholic church and Christian state

Joseph Hergenröther

1876

An appeal to the parliament, or, Sion's plea against the prelacie

Leighton, Alexander

1629

The Kulturkampf

Gordon Boyce Thompson

1909

Anthology of the theological writings of J. Michael Reu

Johann Michael Reu

1997

Rome and the Papacy

Ferdinando Petruccelli della Gattina

1872

The temporal power of the vicar of Jesus Christ

Henry Edward Manning

1862

The Defensor pacis of Marsiglio of Padua

Emerton, Ephraim

1920

Medieval internationalism

Robert Francis Wright

1930

The pope and the revolution

John Henry Newman

1866

Pope Gregory the Great and his relations with Gaul

Frederick William Kellett

1889

The church and the churches

Johann Joseph Ignaz von Döllinger

1862

The independence of the holy see

Manning, Henry Edward, 1808-1892

1877

Western Europe in the eighth century & onward

Edward Augustus Freeman

1904

The independence of the Hly See

Henry Edward Manning

1877

The usurpation of the Pope during the middle ages.

Jean Edme Auguste Gosselin

1845

Popes and princes, 1417-1517

John A. F. Thomson

1980

The papacy and the civil power

Richard Wigginton Thompson

1876

Popes, church, and Jews in the middle ages

Kenneth R. Stow

2007