APA
Joshua Barba, . (2007). Simple Autocad1 For beginners. Legazpi City: ConvergeLink Books Corp.
Chicago
Joshua Barba, . 2007. Simple Autocad1 For beginners. Legazpi City: ConvergeLink Books Corp.
Harvard
Joshua Barba, . (2007). Simple Autocad1 For beginners. Legazpi City: ConvergeLink Books Corp.
MLA
Joshua Barba, . Simple Autocad1 For beginners. Legazpi City: ConvergeLink Books Corp. 2007.