Christianson, J., Fajen, A. Computer and Network Professional's Certification Guide. San Francisco etc.: Network Press, 1998 512 p. il. 0-7821-2260-4.
Christianson, J., Fajen, A. Computer and Network Professional's Certification Guide. San Francisco etc.: Network Press, 1998 512 p. il. 0-7821-2260-4.
Christianson, J., Fajen, A. (1998) Computer and Network Professional's Certification Guide, San Francisco etc.: Network Press 512 p. il. 0-7821-2260-4.
Christianson, J., & Fajen, A. (1998). Computer and Network Professional's Certification Guide. San Francisco etc.: Network Press, 512 p. il.
Christianson J, Fajen A. Computer and Network Professional's Certification Guide. San Francisco etc.: Network Press; 1998. p. 512 p. il. ISBN: 0-7821-2260-4.