APA Style

Richard, L, S. (2007). Mengenal Bencana Alam: LONGSOR . : Pt. Bhuana Ilmu Populer (Gramedia).

MLA Style

Richard, Louise;, Spilsbury,. "Mengenal Bencana Alam: LONGSOR". : Pt. Bhuana Ilmu Populer (Gramedia), 2007. BOOK.