Alexander, M. J. (1977). The earliest English poems (2nd ed.). Penguin.
芝加哥风格引文Alexander, Michael J. The Earliest English Poems. 2nd ed. Harmondsworth: Penguin, 1977.
MLA引文Alexander, Michael J. The Earliest English Poems. 2nd ed. Penguin, 1977.
警告：这些引文格式不一定是100％准确.