✔ 最佳答案
come on...Do you know what are you asking for?? Marketing mix (Product, Price, Place, Promotio) have include product already!
Hence, this marketing mix = marketing 4p is the basic knowledge of marketing! Every text book or reference book must have this information!!!
example of the publisher: McGraw-Hill, Pearson Education ,Prentice-Hall Marketing publications ,Thomson South-Western, Wiley
here is some reserach papers on marketing 4p
i am sure you can use this for your eassay, but i think you better find a text book for your reference rather then using those source.
http://www.tlgonline.com/Positioning/research-paper-marketing-4p.html