APA
B Combs S and Zirbel J H, . (1999). Fundamentals of Auto CAD Release 14. New Jersey: Prentice Hall.
Chicago
B Combs S and Zirbel J H, . 1999. Fundamentals of Auto CAD Release 14. New Jersey: Prentice Hall.
Harvard
B Combs S and Zirbel J H, . (1999). Fundamentals of Auto CAD Release 14. New Jersey: Prentice Hall.
MLA
B Combs S and Zirbel J H, . Fundamentals of Auto CAD Release 14. New Jersey: Prentice Hall. 1999.