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- Teaching Company, Distributed by Recorded Books, Chantilly, Va., Prince Frederick, MD, 2005
- Teaching Company, Distributed by Recorded Books, Chantilly, Va., Prince Frederick, MD, 2002
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- Teaching Co., Chantilly, Va., ©2001
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- Teaching Company, Distributed by Recorded Books, Chantilly, Va., Prince Frederick, MD, c2010
- Teaching Company, Distributed by Recorded Books, Chantilly, Va., Prince Frederick, MD, 2016
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- Teaching Co., Chantilly, Va., c2005
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- Teaching Company, Chantilly, Va., ©2012
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- Teaching Co., Distributed by Recorded Books, Chantilly, Va., Prince Frederick, MD, 2011
- Teaching Company, Chantilly, Va., c2010
- Teaching Company, Distributed by Recorded Books, Chantilly, Va., Prince Frederick, MD, c2012
- Teaching Company, Distributed by Recorded Books, Chantilly, Va., Prince Frederick, MD, c2011
- Wondrium, Chantilly, Va., 2022
- Teaching Company, Chantilly, Va., 2020
- Teaching Co., Chantilly, Va., c2013
- Teaching Company, Chantilly, Va., 2017
- Teaching Co., Chantilly, Va., p2001
- Teaching Co., Chantilly, Va., ℗2003
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- Teaching Co., Chantilly, Va., 2013
- Teaching Co., Chantilly, Va., c2008
- Teaching Co., Chantilly, Va., c2010
- Teaching Company, Distributed by Recorded Books, Chantilly, Va., Prince Frederick, MD, 2006
- Teaching Company, Chantilly, Va., 2018
- Teaching Company, Distributed by Recorded Books, Chantilly, Va., Prince Frederick, MD, c2002