the Centre of Demography, University of Latvia, & Zvidrin̦š, P. (2003). Socio-economic status and living arrangements of older persons in Latvia. United Nations.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)the Centre of Demography, University of Latvia, و P. Zvidrin̦š. Socio-economic Status and Living Arrangements of Older Persons in Latvia. New York: United Nations, 2003.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)the Centre of Demography, University of Latvia, و P. Zvidrin̦š. Socio-economic Status and Living Arrangements of Older Persons in Latvia. United Nations, 2003.