APA Style
Aretin, Karl Otmar von. (1970).
The Papacy and the Modern World .
London:
World University Library.
Chicago Style
Aretin, Karl Otmar von.
The Papacy and the Modern World.
London:
World University Library,
1970.
Text.
MLA Style
Aretin, Karl Otmar von.
The Papacy and the Modern World.
London:
World University Library,
1970.
Text.
Turabian Style
Aretin, Karl Otmar von.
The Papacy and the Modern World.
London:
World University Library,
1970.
Print.