Roberts, R. (1987). Compute!'s using turbo basic. Compute! Pub.
Lua i Stíl Chicago (17ú heag.)Roberts, Ralph. Compute!'s Using Turbo Basic. Greensboro, North Carolina: Compute! Pub, 1987.
Lua MLA (9ú heag.)Roberts, Ralph. Compute!'s Using Turbo Basic. Compute! Pub, 1987.
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