Citazione Stile APA (7a Edizione)

De Guzman, A., Reyes, J., Hofileña, C. F., & Lapitan, G. B. (2003). Watershed management: Saving forests, storing water for the future. Philippines-Canada Local Government Support Program.

Citazione stile Chigago Style (17a edizione)

De Guzman, Aileen, Joyce Reyes, Chay Florentino- Hofileña, e Giselle Baretto- Lapitan. Watershed Management: Saving Forests, Storing Water for the Future. Pasig City: Philippines-Canada Local Government Support Program, 2003.

Citatione MLA (9a ed.)

De Guzman, Aileen, et al. Watershed Management: Saving Forests, Storing Water for the Future. Philippines-Canada Local Government Support Program, 2003.