Gerdessen 1982, p. 76. F. Gerdessen, Estonian Air Power 1918 - 1945, in Air Enthusiast, No 18, aprile-luglio 1982, pp. 61–76, ISSN 0143-5450 (WC · ACNP).
worldcat.org
Gerdessen 1982, p. 76. F. Gerdessen, Estonian Air Power 1918 - 1945, in Air Enthusiast, No 18, aprile-luglio 1982, pp. 61–76, ISSN 0143-5450 (WC · ACNP).