(1970). Die Lena in Sibirien.
Tohutoru Kātū Chicago (17th ed.)Die Lena in Sibirien. 1970.
Tohutoro MLA (9th ed.)Die Lena in Sibirien. 1970.
Kia tūpato: Kāore pea ēnei kupu hautoa i te ōrite pū 100%.
Tohutoro APA (7th ed.)