Roy, W., & Elizabeth, P. S. (1987). Designing portable computerized intruments. Tab Books.
Čikaški stil citiranja (17. izdanje)Roy, William, i Penrose Sandra Elizabeth. Designing Portable Computerized Intruments. Tab Books, 1987.
MLA način citiranja (8. izdanje)Roy, William, i Penrose Sandra Elizabeth. Designing Portable Computerized Intruments. Tab Books, 1987.
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