Danielson-Kalmari 1920, p. 148. Danielson-Kalmari, Johan Richard (1920). Ahvenanmaan Asia: vv. 1914–1920 [The Åland Affair: 1914–1920] (in Finnish). Helsinki: Olava. OCLC253288536.
Danielson-Kalmari 1920, p. 149. Danielson-Kalmari, Johan Richard (1920). Ahvenanmaan Asia: vv. 1914–1920 [The Åland Affair: 1914–1920] (in Finnish). Helsinki: Olava. OCLC253288536.