Sears, W. H. (2007). The front line guide to thinking clearly. HRD Press.
Cita Chicago Style (17a ed.)Sears, Woodrow H. The Front Line Guide to Thinking Clearly. Amherst, Mass.: HRD Press, 2007.
Cita MLA (8a ed.)Sears, Woodrow H. The Front Line Guide to Thinking Clearly. HRD Press, 2007.
Precaución: Estas citas no son 100% exactas.