Holstein, W. K., & Seagle, J. P. (1987). BASIC: Concepts and applications. Business.
Lua i Stíl Chicago (17ú heag.)Holstein, William K., agus John P. Seagle. BASIC: Concepts and Applications. Plano, Tex: Business, 1987.
Lua MLA (9ú heag.)Holstein, William K., agus John P. Seagle. BASIC: Concepts and Applications. Business, 1987.
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