Reference: Norwood 1997

Norwood, Susan. 1997. Gramática de la lengua sumu. Managua: CIDCA. xvi+184pp.

@book{norwood1997mayangna,
  address   = {Managua},
  author    = {Norwood, Susan},
  pages     = {xvi+184},
  publisher = {CIDCA},
  title     = {Gramática de la lengua sumu},
  year      = {1997}
}