Gaya APA

Report on the Second Expedition to the Kelud Volcano on September 25 th, 26 th, 27 th, 1975. (). Bandung, Jawa Barat, Indonesia: Pusat Vulkanologi dan Mitigasi Bencana Geologi.

Gaya MLA

Report on the Second Expedition to the Kelud Volcano on September 25 th, 26 th, 27 th, 1975. . Bandung, Jawa Barat, Indonesia: Pusat Vulkanologi dan Mitigasi Bencana Geologi, . .