Aiken, R. S. (1973). Images of nature in Swettenham's early writings: Prolegomenon to a historical perspective on Peninsular Malaysia's ecological problems. Asian Studies.
Chicago Style (17. basım) AtıfAiken, Robert S. "Images of Nature in Swettenham's Early Writings: Prolegomenon to a Historical Perspective on Peninsular Malaysia's Ecological Problems." Asian Studies 1973.
MLA (9th ed.) AtıfAiken, Robert S. "Images of Nature in Swettenham's Early Writings: Prolegomenon to a Historical Perspective on Peninsular Malaysia's Ecological Problems." Asian Studies, 1973.
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