Beekman, G., & Beekman, B. (2009). Tomorrow's technology and you (Complete, 9th ed.). Prentice Hall.
Citace podle Chicago (17th ed.)Beekman, George, a Ben Beekman. Tomorrow's Technology and You. Complete, 9th ed. Upper Saddle River, N.J: Prentice Hall, 2009.
Citace podle MLA (9th ed.)Beekman, George, a Ben Beekman. Tomorrow's Technology and You. Complete, 9th ed. Prentice Hall, 2009.
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