Gaya APA
Stehn, C, E. et al
(1929).
Krakatau--Part I. The geology and volcanism of the Krakatau group
.
xx:
.
Gaya MLA
Stehn, Ch., E.. et al.
"Krakatau--Part I. The geology and volcanism of the Krakatau group".
xx:
,
1929.
print.