<EHRLICH, P. R. &. A. E. Population resources environment. UGM - Yayasan.
Chicago Style (17th ed.) Citation<EHRLICH, Paul R. & A.H. Ehrlich>. Population Resources Environment. UGM - Yayasan.
MLA (8th ed.) Citation<EHRLICH, Paul R. & A.H. Ehrlich>. Population Resources Environment. UGM - Yayasan.
Warning: These citations may not always be 100% accurate.