APA (7th ed.) Citation

Shelly, G. B., Vermaat, M., & Cashman, T. J. (1999). HTML: Introductory concepts and techniques. Course Technology.

Chicago Style (17th ed.) Citation

Shelly, Gary B., Misty Vermaat, and Thomas J. Cashman. HTML: Introductory Concepts and Techniques. Cambridge, Mass. ; London: Course Technology, 1999.

MLA (9th ed.) Citation

Shelly, Gary B., et al. HTML: Introductory Concepts and Techniques. Course Technology, 1999.