Cox, H. (1988). The silencing of Leonardo Boff: The Vatican and the future of world Christianity. Meyer-Stone Books.
Chicago-viite (17. p.)Cox, Harvey. The Silencing of Leonardo Boff: The Vatican and the Future of World Christianity. Oak Park, IL: Meyer-Stone Books, 1988.
MLA-viite (8. p.)Cox, Harvey. The Silencing of Leonardo Boff: The Vatican and the Future of World Christianity. Meyer-Stone Books, 1988.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.