Before revision: The theoretical concepts were proposed by Marshall McLuhan in 1964, while the term media ecology was first formally introduced by Neil Postman in 1968.
After revision: Cite book|title=Introducing Communication Theory|last1=West|first1=Richard|last2=Turner|first2=Lynn H.|publisher=McGraw-Hill Education|year=2014|isbn=978-0-07-353428-2|location=New York|pages=454–472The theoretical concepts were proposed by Marshall McLuhan in 1964, while the term media ecology was first formally introduced by Neil Postman in 1968.