The APA citation format for the LabSim courses is:
TestOut Corp. (Publication Date). Title of LabSim course (section #.#.#). Retrieved from http://www.testout.com
TestOut Corp. (2010, March 24). LabSim A+ Practical Application 220-702 (section 1.2.4). Retrieved from http://www.testout.com
For date of product refer to: Release dates.
If another format is needed, the same information can still be used.