Não informado. (1972). Remote Sensing in Canada. Canada Centre for Remote Sensing.
Lua i Stíl Chicago (17ú heag.)Não informado. Remote Sensing in Canada. Ottawa: Canada Centre for Remote Sensing, 1972.
Lua MLA (8ú heag.)Não informado. Remote Sensing in Canada. Canada Centre for Remote Sensing, 1972.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.