W. T. · Wil Tirion · Wil Tirion Ian Ridpath · Will Tirion
| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Cambridge Guide to Stars and Planets | 978-0-521-58582-8 | 1997 | P. Moore |
| ESTRELLAS Y PLANETAS, 3/ED. | 978-84-282-1314-1 | 2001 | IAN RIDPATH |
| ESTRELLAS Y PLANETAS. MANUAL IDENTIFICACION | 978-84-282-1178-9 | 1999 | " |
| GUIA CELESTE MENSUAL: THE MONTHLY SKY G. | 978-84-282-0864-2 | 1989 | " |
| Sky Atlas 2000.0 Field Edition | 978-0-933346-32-1 | 1981 | |
| The Monthly Sky Guide | 978-0-521-33921-6 | 1987 | Ian Ridpath |
Cambridge University Press · Omega · Sky Pub Corp