Letters to Penthouse XXVIII: Threesomes, Foursomes, and Moresomes (v. 28)
| Country | USA |
| Brand | Grand Central Publishing |
| Manufacturer | Grand Central Publishing |
| Binding | Mass Market Paperback |
| ItemPartNumber | part_0446619388 |
| IsAdultProduct | 1 |
| ReleaseDate | 2011-05-01 |
| UnitCount | 1 |
| EANs | 9780446619387 |