1. Adler A. Characteristics of the first, second, and the third child // Children. 1928. N 3. P. 14–52.
2. Adler A. First Childhood Recollection // International Journal of Individual Psychology. 1933. Vol. 11. P. 81–90.
3. Adler A. Praktika i teoriya individual'noi psikhologii. M: Akademicheskii proekt, 2007. [in Russian]
4. Bazhin F.E., Golynkina E.A., Etkind A.M. Oprosnik urovnya sub'ektivnogo kontrolya (USK). M.: Smysl, 1993. [in Russian]
5. Belmont L., Marolla F. Birth order, family size and intelligence // Science. 1973. Vol. 182. P. 1096–1101.