Cita APA (7a ed.)

Unated States Board on Geographic Names. (1969). Panama and the Canal Zone: Official standard names..

Cita Chicago Style (17a ed.)

Unated States Board on Geographic Names. Panama and the Canal Zone: Official Standard Names.. Washington DC - EEUU, 1969.

Cita MLA (8a ed.)

Unated States Board on Geographic Names. Panama and the Canal Zone: Official Standard Names.. 1969.