(1991). [Bucharin, Nikolaj Ivanovič].
Tohutoru Kātū Chicago (17th ed.)[Bucharin, Nikolaj Ivanovič]. 1991.
Tohutoro MLA (9th ed.)[Bucharin, Nikolaj Ivanovič]. 1991.
Kia tūpato: Kāore pea ēnei kupu hautoa i te ōrite pū 100%.
Tohutoro APA (7th ed.)