Citazione Stile APA (7a Edizione)

(1993). Lecture-series on the Philippine environment in the 21st century: issues and concerns: Jorge A. Emmanuel ... [et al.]. Institute of International Legal Studies, University of the Philippines Law Center.

Citazione stile Chigago Style (17a edizione)

Lecture-series on the Philippine Environment in the 21st Century: Issues and Concerns: Jorge A. Emmanuel ... [et Al.]. Quezon City: Institute of International Legal Studies, University of the Philippines Law Center, 1993.

Citatione MLA (9a ed.)

Lecture-series on the Philippine Environment in the 21st Century: Issues and Concerns: Jorge A. Emmanuel ... [et Al.]. Institute of International Legal Studies, University of the Philippines Law Center, 1993.