Ulff-Møller, N. K. (1989). Transcription of the Stichera Idiomela for the month of April from Russian manuscripts from the 12th century. Slavistische Beiträge.
芝加哥风格引文Ulff-Møller, Nina Konstantinova. "Transcription of the Stichera Idiomela for the Month of April from Russian Manuscripts from the 12th Century." Slavistische Beiträge 1989.
MLA引文Ulff-Møller, Nina Konstantinova. "Transcription of the Stichera Idiomela for the Month of April from Russian Manuscripts from the 12th Century." Slavistische Beiträge, 1989.
警告：这些引文格式不一定是100％准确.