| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Volunteer Vacations: Short-Term Adventures That Will Benefit You and Others | 978-1-56976-841-9 | 2012 | Bill McMillon · Anne Geissinger |
| Volunteer Vacations: Short-Term Adventures That Will Benefit You and Others | 978-1-55652-784-5 | 2009 | Bill McMillon · Anne Geissinger |
| Volunteer Vacations: Short-Term Adventures That Will Benefit You and Others | 978-1-55652-582-7 | 2006 | Bill McMillon · Anne Geissinger |
| Volunteer Vacations: Short-Term Adventures That Will Benefit You and Others | 978-1-55652-461-5 | 2002 | Bill McMillon · Anne Geissinger |