Gaya APA
Ratzinger, Joseph Cardinal. (1969).
Introduction to Christianity (1).
London:
Burns and Oates.
Gaya Chicago
Ratzinger, Joseph Cardinal.
Introduction to Christianity.
1
London:
Burns and Oates,
1969.
Text.
Gaya MLA
Ratzinger, Joseph Cardinal.
Introduction to Christianity.
1
London:
Burns and Oates,
1969.
Text.
Gaya Turabian
Ratzinger, Joseph Cardinal.
Introduction to Christianity.
1
London:
Burns and Oates,
1969.
Print.