Gaya APA
Rittmann, A., Vincent, E. A. (1960).
Volcanoes and Their Activity .
New York:
John Wiley and Sons.
Gaya Chicago
Rittmann, A., Vincent, E. A.
Volcanoes and Their Activity.
New York:
John Wiley and Sons,
1960.
Text.
Gaya MLA
Rittmann, A., Vincent, E. A.
Volcanoes and Their Activity.
New York:
John Wiley and Sons,
1960.
Text.
Gaya Turabian
Rittmann, A., Vincent, E. A.
Volcanoes and Their Activity.
New York:
John Wiley and Sons,
1960.
Print.