My references
From Internet: Knowledge and Community
As taken from my high school research paper:
McWhorter, John, Professor The Story of Human Language Copyright 2004, The Teaching Company Limited Partnership. Audio lecture series.
Restak, Richard M., M.D. The Mind Copyright 1988, Educational Broadcasting corporation and Richard M. Restak. Book.
Ricks, Christopher Michaels, Leonard The State of the Language Copyright 1990, The Regents of the University of California. Book.