Gaya APA
ICAO, . (2018).
handbook of radio frequency spectrum requirements for civil aviation DOC 9718 AN/957 (SECOND EDITION).
Canada:
ICAO.
Gaya MLA
ICAO, .
"handbook of radio frequency spectrum requirements for civil aviation DOC 9718 AN/957".
SECOND EDITION
Canada:
ICAO,
2018.
Text.