| http://digfir-published.macmillanusa.com/hm_custom_osu/hmlsu_wischusen_f13_lab10_prelab4.html | Chapter 2. Writing Lab
| 51e42c9db62f8b8921000007 |
| http://digfir-published.macmillanusa.com/hm_custom_osu/hmlsu_wischusen_f13_lab10_prelab4_dlap.xml | DLAP questions | 51e42c9db62f8b8921000007 |