Armstrong, Gary‏ ‎ (Gary M.)‏ (Nombre personal)

Kotler, P. Marketing, c1987:‏ CIP t.p. (Gary Armstrong, Univ. of N.C.)‏

Univ. of N.C., Kenan-Flagler Business Sch. WWW site, 7 Mar. 2005:‏ ‎ faculty directory (Gary M. Armstrong, marketing researcher, teacher & textbook author)‏

Kotler, P. Marketing, c1987:‏ CIP t.p. (Gary Armstrong, Univ. of N.C.)‏

Kotler, P. Marketing, c1987:‏ CIP t.p. (Gary Armstrong, Univ. of N.C.)‏