Gaya APA

Sinkin, T., S.Fiske, R. (1983). Krakatau 1883' The Volcanic eruption and its effects . Wasinton DC: Smithsonian Institution press.

Gaya MLA

Sinkin, Tom., S.Fiske, Richard. "Krakatau 1883' The Volcanic eruption and its effects". Wasinton DC: Smithsonian Institution press, 1983. Laporan Penelitian.