IBON Foundation, Inc. Databank & Research Center, & Danchurchaid. (1997). The state of the Philippine environment. Ibon Foundation, Databank & Research Center.
Citazione stile Chigago Style (17a edizione)IBON Foundation, Inc. Databank & Research Center, e Danchurchaid. The State of the Philippine Environment. Manila, Philippines: Ibon Foundation, Databank & Research Center, 1997.
Citatione MLA (9a ed.)IBON Foundation, Inc. Databank & Research Center, e Danchurchaid. The State of the Philippine Environment. Ibon Foundation, Databank & Research Center, 1997.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.