Steinfeldt, E. (1973). Russian word count: 2500 words most commonly used in modern literary Russian : guide for teachers of Russian. Progress Publishers.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Steinfeldt, Evi. Russian Word Count: 2500 Words Most Commonly Used in Modern Literary Russian : Guide for Teachers of Russian. Moscow: Progress Publishers, 1973.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Steinfeldt, Evi. Russian Word Count: 2500 Words Most Commonly Used in Modern Literary Russian : Guide for Teachers of Russian. Progress Publishers, 1973.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.