Gaya APA

Suryo, I. (1981). Bulletin of The Volcanological Survey of Indonesia For Ther Years 1961, 1962, 1963 No. 104 1981 (Tahun 1981). Bandung: Direktorat Vulkanologi.

Gaya MLA

Suryo, I.. "Bulletin of The Volcanological Survey of Indonesia For Ther Years 1961, 1962, 1963 No. 104 1981". Tahun 1981 Bandung: Direktorat Vulkanologi, 1981. Text.