Li, H. (1963). The origin and cultivation of shade and ornamental trees. University of Pennsylvania Press.
Cita Chicago Style (17a ed.)Li, Hui-Lin. The Origin and Cultivation of Shade and Ornamental Trees. Philadelphia: University of Pennsylvania Press, 1963.
Cita MLA (8a ed.)Li, Hui-Lin. The Origin and Cultivation of Shade and Ornamental Trees. University of Pennsylvania Press, 1963.
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