Παραπομπή σε μορφή APA (7η εκδ.)

Västberg, A. (1997). Investigations of the ionospheric HF channel by ray tracing. Swedish Institute of Space Physics.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Västberg, Anders. Investigations of the Ionospheric HF Channel by Ray Tracing. Kiruna: Swedish Institute of Space Physics, 1997.

Παραπομπή σε μορφή MLA (8th εκδ.)

Västberg, Anders. Investigations of the Ionospheric HF Channel by Ray Tracing. Swedish Institute of Space Physics, 1997.