History of marketing
Other periodisations

For all the controversies surrounding marketing stages or periods, Keith and others appear to have contributed a lasting legacy. A study by Grundey (2010) suggests that many contemporary textbooks begin with Keith's eras and expand on it by including newer concepts such as the societal marketing concept, the relationship marketing concept and the interfunctional concept, as shown in the table below. More recently, Kotler and Keller added the holistic marketing concept to the list of eras in marketing. Marketing theorists continue to debate whether the holistic era represents a genuine new orientation or whether it is an extension of the marketing concept. Grundey summarised five different periodisations in the history of marketing, as shown in the following table, as a means of highlighting the general lack of agreement among scholars.
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