Nijman, V. (2009). An assessment of trade in gibbons and orang-utans in Sumatra, Indonesia. TRAFFIC Southeast Asia.
Citace podle Chicago (17th ed.)Nijman, Vincent. An Assessment of Trade in Gibbons and Orang-utans in Sumatra, Indonesia. Petaling Jaya, Selangor, Malaysia: TRAFFIC Southeast Asia, 2009.
Citace podle MLA (9th ed.)Nijman, Vincent. An Assessment of Trade in Gibbons and Orang-utans in Sumatra, Indonesia. TRAFFIC Southeast Asia, 2009.
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