APA
(2005). A Field Manual for Environmental Valuation in Sri Lanka. Sri Lanka: Ministry of Environment and Natural Resources.
Chicago
2005. A Field Manual for Environmental Valuation in Sri Lanka. Sri Lanka: Ministry of Environment and Natural Resources.
Harvard
(2005). A Field Manual for Environmental Valuation in Sri Lanka. Sri Lanka: Ministry of Environment and Natural Resources.
MLA
A Field Manual for Environmental Valuation in Sri Lanka. Sri Lanka: Ministry of Environment and Natural Resources. 2005.