Gaya APA

VENZKE, E, ;, W, R. (2007). Bulletin of the Global volcanism network vol. 32, No. 5 May 2007. Washington DC. Smitsonian National Museum of Natural history.2007 . : National Museum of National History.

Gaya MLA

VENZKE, Edward, ;, WUNDERMAN,, Rick. "Bulletin of the Global volcanism network vol. 32, No. 5 May 2007. Washington DC. Smitsonian National Museum of Natural history.2007". : National Museum of National History, 2007. Laporan.