Simpson, C. (1939). Animal & Bird Painting: The Outlook and Tecnique of the Artist (5a ed.). Batsford.
Cita Chicago Style (17a ed.)Simpson, Charles. Animal & Bird Painting: The Outlook and Tecnique of the Artist. 5a ed. London: Batsford, 1939.
Cita MLA (8a ed.)Simpson, Charles. Animal & Bird Painting: The Outlook and Tecnique of the Artist. 5a ed. Batsford, 1939.
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