Cita APA (7th ed.)
Marshall, G. W., & Johnston, M. W. Marketing Management (Fourth edition.).
Cita Chicago (17th ed.)
Marshall, Greg W., i Mark W. Johnston. Marketing Management. Fourth edition. Mc Graw Hill.
Cita MLA (9th ed.)
Marshall, Greg W., i Mark W. Johnston. Marketing Management. Fourth edition.
Atenció: Aquestes cites poden no estar 100% correctes.