APA (7th ed.) Citation

Graham, R. (1983). Practical Pascal for microcomputers. Sigma technical.

Chicago Style (17th ed.) Citation

Graham, Roger. Practical Pascal for Microcomputers. Wilmslow: Sigma technical, 1983.

MLA (9th ed.) Citation

Graham, Roger. Practical Pascal for Microcomputers. Sigma technical, 1983.

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