The following references are recommended for this lecture:
Where Did Everything Come From?, Discover Magazine, April 2002
Cosmology: The Nature of the Universe Debate, Publications of the Astronomical Society of the Pacific, Vol III No. 757 March 1999
The above debate is described on this website
The Inflationary Universe, Alan H. Guth, Addison Wesley, 1997
Blind Watchers of the Sky, Rocky Kolb, Addison Wesley,1997