Electronic/World Wide Web>Internet Article:  Bill, Sears and Martha , Sears (2011), Dr. Sears Addresses Recent Co-Sleeping Concerns, http://www.askdrsears.com, Retrieved on 2011-11-22

Source Material [www.askdrsears.com]

Books, Brochures, and Chapters>Book:  Spock , Benjamin (2004-06-01), Dr. Spock's Baby and Child Care: 8th Edition, Gallery Books, Retrieved on 2011-10-03

Books, Brochures, and Chapters>Book:  Greenberg , Gary and Hayden , Jeannie (2004-05-04), Be Prepared: A Practical Handbook for New Dads, Simon & Schuster, Retrieved on 2011-10-03

Books, Brochures, and Chapters>Book:  Borgenicht , Louis and Borgenicht , Joe (2003-02-01), The Baby Owner's Manual (Owner's and Instruction Manual), Quirk Books, Retrieved on 2011-10-03

Books, Brochures, and Chapters>Book:  Eliot , Lise (2000-10-03), What's Going on in There? : How the Brain and Mind Develop in the First Five Years of Life, Bantam, Retrieved on 2011-07-18