Cliff Allen (Allen, Cliff)

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  Internet World Guide to One-To-One Web Marketing
  by Cliff Allen, Deborah Kania, Beth Yaeckel
  Softcover, John Wiley & Sons Inc, ISBN 0471251666 (0-471-25166-6)
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  Netrepreneur: The Dimension of Transferring Your Business Model to the Internet
  by Cliff Allen, Joseph Lowery
  Softcover, Macmillan Computer Pub, ISBN 0789717255 (0-7897-1725-5)
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  One-to-One Web Marketing: Build a Relationship Marketing Strategy One Customer at a Time
  by Cliff Allen, Deborah Kania, Beth Yaeckel
  Hardcover, John Wiley & Sons, ISBN 0471013714 (0-471-01371-4)