Gaya APA

Wahyudi, . (1999). A Study of The Eruption Mechanism of Krakatau Volcano Based on Seismic Data of The 1992-1997 Activities . Yogyakarta: Universitas Gadjah Mada.

Gaya MLA

Wahyudi, . "A Study of The Eruption Mechanism of Krakatau Volcano Based on Seismic Data of The 1992-1997 Activities". Yogyakarta: Universitas Gadjah Mada, 1999. Text.