10 definitions of what marketing is, the authors and year

Answer 1

http://www.google.com/search?q=definition+of+marketing&aq=f&oq=definition+of+marketing&aqs=chrome.0.57j5j0l2j62l2.7820&sourceid=chrome&ie=UTF-8

http://www.answers.com/topic/marketing

http://scholar.google.com/scholar?hl=en&q=marketing+definition&btnG=&as_sdt=1%2C44&as_sdtp=

Read widely and take good notes.

Answer 2

Ten definitions date and the author

Answer 3

not clear