Gaya APA
Ratzinger, Joseph. (1986).
Introduction to Christianity (Kesatu).
New York:
Crossroad.
Gaya Chicago
Ratzinger, Joseph.
Introduction to Christianity.
Kesatu
New York:
Crossroad,
1986.
.
Gaya MLA
Ratzinger, Joseph.
Introduction to Christianity.
Kesatu
New York:
Crossroad,
1986.
.
Gaya Turabian
Ratzinger, Joseph.
Introduction to Christianity.
Kesatu
New York:
Crossroad,
1986.
.