Gaya APA
Bulletin of Volcanic Eruptions No. 33 Annual Report of the World Volcanic Eruptions in 1993. ().
Japan:
Volcanological Society of Japan.
Gaya MLA
Bulletin of Volcanic Eruptions No. 33 Annual Report of the World Volcanic Eruptions in 1993.
.
Japan:
Volcanological Society of Japan,
.
.