Clarity Multimedia. (2006). The use of measuring tools. Coastal Training Technologies.
Chicago-viite (17. p.)Clarity Multimedia. The Use of Measuring Tools. Virginia Beach, VA: Coastal Training Technologies, 2006.
MLA-viite (8. p.)Clarity Multimedia. The Use of Measuring Tools. Coastal Training Technologies, 2006.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.