APA (7th ed.) Citation

Clark lhDavid. Internet essentials (4th ed.).

Chicago Style (17th ed.) Citation

Clark lhDavid. Internet Essentials. 4th ed. New Jersey lbPrentice Hall lc1999.

MLA (9th ed.) Citation

Clark lhDavid. Internet Essentials. 4th ed.

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