@misc{dryerorder-hhsGuderianGuderianKoluwawa,
  author       = {Guderian, Brad and Guderian, Toni},
  howpublished = {Ms.},
  key          = {Guderian and Guderian 2002},
  pages        = {vi+111},
  title        = {Koluwawa Grammar Essentials},
  year         = {2002}
}