APA (7th ed.) Citation

Roy, W., & Elizabeth, P. S. (1987). Designing portable computerized intruments. Tab Books.

Chicago Style (17th ed.) Citation

Roy, William, and Penrose Sandra Elizabeth. Designing Portable Computerized Intruments. Tab Books, 1987.

MLA (8th ed.) Citation

Roy, William, and Penrose Sandra Elizabeth. Designing Portable Computerized Intruments. Tab Books, 1987.

Warning: These citations may not always be 100% accurate.