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Selling services : marketing for the consulting professional ; no tiresome storytelling, only useful information
O'Neil, Paul, (1998)
How to acquire clients : powerful techniques for the successful practitioner
Weiss, Alan, (2002)
Relationships that enable enterprise change : leveraging the client-consultant connection
Carucci, Ron A., (2002)
Proven proposal strategies to win more business
Holtz, Herman, (1998)
The consultant's guide to proposal writing : how to satisfy your clients and double your income
The direct marketer's workbook
Holtz, Herman, (1986)