IBON Foundation, Inc. Databank & Research Center, & Danchurchaid. (1997). The state of the Philippine environment. Ibon Foundation, Databank & Research Center.
芝加哥风格引文IBON Foundation, Inc. Databank & Research Center, 与 Danchurchaid. The State of the Philippine Environment. Manila, Philippines: Ibon Foundation, Databank & Research Center, 1997.
MLA引文IBON Foundation, Inc. Databank & Research Center, 与 Danchurchaid. The State of the Philippine Environment. Ibon Foundation, Databank & Research Center, 1997.
警告：这些引文格式不一定是100％准确.