Cita APA (7th ed.)

Gunatilake, H., & Gunaratne, L. L. (2002). Policy options for conservating Sri Lanka's natural forests. Economy and Environment Program for Southeast Asia (EEPSEA).

Cita Chicago (17th ed.)

Gunatilake, H.M, i Leslie L. Gunaratne. Policy Options for Conservating Sri Lanka's Natural Forests. Tanglin, Singapore: Economy and Environment Program for Southeast Asia (EEPSEA), 2002.

Cita MLA (9th ed.)

Gunatilake, H.M, i Leslie L. Gunaratne. Policy Options for Conservating Sri Lanka's Natural Forests. Economy and Environment Program for Southeast Asia (EEPSEA), 2002.