Gualberto, C. D., & Manuel, L. R. The economic cost of lahar in Pampanga (1991-1997).
芝加哥风格引文Gualberto, Celeste D., 与 Lourdes R. Manuel. The Economic Cost of Lahar in Pampanga (1991-1997).
MLA引文Gualberto, Celeste D., 与 Lourdes R. Manuel. The Economic Cost of Lahar in Pampanga (1991-1997).
警告：这些引文格式不一定是100％准确.