Journals:

Geer RC, Sayers EW, Entrez : making use of its power,2003 Jun;4(2):179-84, National Center for Biotechnology Information, National Library of Medicine, Bethesda, MD 20894, USA.

TextBooks:

1. Vittal R.Srinivas, "Bioinformatics - A Practical Guide to the analysis of Genes and Proteins" , 2005, ISBN : 978-81-203-2858-7, published by PHI Learning Private Limited, New Delhi. 

2. Andreas D.Baxevanis, B.F. Francis Ouellette, "Bioinformatics - A Practical Guide to the Analysis of Genes and Proteins", Third Edition, 2005-2006, ISBN: 978-81-265-2192-0, published by John Wiley & Sons INC. , U.K.

Webliography: 

1. Entrez Help: www.ncbi.nlm.nih.gov/books/NBK3837/

2. NCBI: www.nlm.nih.gov/

3. www.ncbi.nlm.nih.gov/nuccore

4. www.ncbi.nlm.nih.gov/books/NBK44863/
 

 Videos:

1. Introduction to Entrez: https://www.youtube.com/watch?v=eyhuoKYz8V8