Gaya APA
ICAO, . (1951).
CIRCULAR 20-AN/17 IDENTIFICATION OF LF/MF NON-DIRECTIONAL RADIO BEACONS UTILIZING FREQUENCY MODULATION (F1) .
Canada:
ICAO.
Gaya MLA
ICAO, .
"CIRCULAR 20-AN/17 IDENTIFICATION OF LF/MF NON-DIRECTIONAL RADIO BEACONS UTILIZING FREQUENCY MODULATION (F1)".
Canada:
ICAO,
1951.
Text.