Max K. Adler , Market and opinion research: their use for newspapers and magazines, Gazette, Leyden, Vol. II (1956): 1, p. 2.
2.
Max K. Adler , Market and opinion research: their use for newspapers and magazines, Gazette, Leyden, Vol 11 (1956): 1, p. I.
3.
Now consisting of Messrs. Philippe Gunet (France), rapporteur; William E. McKeachie (United States), Colonel George Warden O.B.E. (United Kingdom), Dr. H. Scheerer (Germany), James Brade (Sweden), Paul Fabricius (Denmark), L. R. Gits and Pierre Boisacq (Belgium), Mrs. M. C. Psimenos, secretary; under the chairmanship of the author.
4.
The readers of the press are your potential customers, Brochure 176 of the International Chamber of Commerce, Paris (February 1955), p. 3.
5.
W.H. Van Baarle, Reclamekunde en reclameleer, Leyden, ( 1956), p. 416.
6.
The readers of the press are your potential customers, Paris (February 1955), p. 4-5.
7.
The readers of the press are your potential customers, Paris (February 1955), p. 22.
8.
Advertising: conditions and regulations in various countries, International Chamber of Commerce, Paris 1953.
9.
L.R. Gits: Qualitative circulation of press media, Appendix II of The readers of the press are your potential customers, Paris1955, page 27.
10.
Statements and resolutions 1955-1957, XVIth Congress of the I.C.C. Naples 6—10 May 1957, Brochure 193 of the International Chamber of Commerce, Paris 1957, page 85.
