Johnson, B. (1930). The technique of pencil drawing. I. Pitman and sons.
Cita Chicago Style (17a ed.)Johnson, Borough. The Technique of Pencil Drawing. London: I. Pitman and sons, 1930.
Cita MLA (9a ed.)Johnson, Borough. The Technique of Pencil Drawing. I. Pitman and sons, 1930.
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