(1983). Apple II computer graphics / Ken Williams, Bob Kernaghan, Lisa Kernaghan ; illus. by Gregory Paul Steffen.
Tohutoru Kātū Chicago (17th ed.)Apple II Computer Graphics / Ken Williams, Bob Kernaghan, Lisa Kernaghan ; Illus. by Gregory Paul Steffen. 1983.
Tohutoro MLA (9th ed.)Apple II Computer Graphics / Ken Williams, Bob Kernaghan, Lisa Kernaghan ; Illus. by Gregory Paul Steffen. 1983.
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