Bean, Joanna; GAZETTE, THE (17 de septiembre de 1997). «Publisher plans to buy Wiley Law operation/ Deal probably will result in layoffs for most of the 44 employees in Springs division». The Gazette; Colorado Springs, Colo. (Colorado Springs, Colo., United States, Colorado Springs, Colo.). p. -1. ISSN1531-2607. ProQuest268129585.
Benjamin, Jeff (23 de noviembre de 1994). «Aspen buys Prentice Hall Journals». The Daily Record (Baltimore). p. 3. Consultado el 6 de julio de 2021.
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Bean, Joanna; GAZETTE, THE (17 de septiembre de 1997). «Publisher plans to buy Wiley Law operation/ Deal probably will result in layoffs for most of the 44 employees in Springs division». The Gazette; Colorado Springs, Colo. (Colorado Springs, Colo., United States, Colorado Springs, Colo.). p. -1. ISSN1531-2607. ProQuest268129585.