Using Informix SQL (2nd Edition) By Jonathan Leffler

SQL Pocket Guide: A Guide to SQL Usage - Paperback By Gennick, Jonathan - GOOD

Oracle SQL*Plus by Jonathan Gennick (1999, Trade Paperback)

SQL Pocket Guide (Pocket Reference) by Jonathan Gennick Paperback Book The Fast

Informix Handbook

Using Informix SQL by Jonathan Leffler (2nd edition Paperback, 1991) - VGC

SQL Pocket Guide - Paperback, by Gennick Jonathan - Very Good

Oracle SQL*Plus Paperback Jonathan Gennick