Gaya APA
Shrock, C., Heather, S. (2017).
Beginning AutoCAD : 2018 Exercise Workbook .
Amerika:
Cheryl R. Shrock and Industrial Press.
Gaya MLA
Shrock, Cheryl., Heather, Steve.
"Beginning AutoCAD : 2018 Exercise Workbook".
Amerika:
Cheryl R. Shrock and Industrial Press,
2017.
Text.