Hall, P. R. (1977). Language contact in the USSR: Some prospects for language maintenance among Soviet minority language groups. Univ. Microfilms.
Chicago-Zitierstil (17. Ausg.)Hall, Paul R. Language Contact in the USSR: Some Prospects for Language Maintenance Among Soviet Minority Language Groups. Ann Arbor, Mich: Univ. Microfilms, 1977.
MLA-Zitierstil (9. Ausg.)Hall, Paul R. Language Contact in the USSR: Some Prospects for Language Maintenance Among Soviet Minority Language Groups. Univ. Microfilms, 1977.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.