Information please almanac

प्रकाशित 1997

The World Almanac and book of facts, 1994.

प्रकाशित 1993

Introduction to the conventions, expositions, and meetings industry

द्वारा Rutherford, Denney G. 1942-
प्रकाशित 1990

Planning and marketing conferences and workshops tips, tools, and techniques

द्वारा Simerly, Robert G.
प्रकाशित 1990

How to organize effective conferences and meetings

द्वारा Seekings, David
प्रकाशित 1987