| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Search Engine Optimization Secrets | 978-0-470-55418-0 (0-470-55418-5) | 2011 | Erik Dafforn |
| Search Engine Optimization Secrets | 978-81-265-3108-0 (81-265-3108-8) | 2011 | |
D D · Dan Diaper · Dan DiPiro · Dana Dabiri · Dani DiPirro · Danny Dover And Erik Dafforn · Danny Dufour · Dawn Dupree · Dean Debra · Diana Divera · Diane Dufour · Donna Dewberry · Donna Dubrow · Erik Dafforn Danny Dover