APA (7e ed.) Bronvermelding

Emmanuel, J. A. (1993). Lecture-series on the Philippine environment in the 21st century: Issues and concerns. Institute of Legal Studies, U.P. Law Center.

Chicago (17e ed.) Bronvermelding

Emmanuel, Jorge A. Lecture-series on the Philippine Environment in the 21st Century: Issues and Concerns. Quezon City: Institute of Legal Studies, U.P. Law Center, 1993.

MLA (9e ed.) Bronvermelding

Emmanuel, Jorge A. Lecture-series on the Philippine Environment in the 21st Century: Issues and Concerns. Institute of Legal Studies, U.P. Law Center, 1993.