Nelson, M. (1989). Structures of Opposition in Old English Poems. BRILL.
芝加哥风格引文Nelson, Marie. Structures of Opposition in Old English Poems. Leiden ; Boston: BRILL, 1989.
MLA引文Nelson, Marie. Structures of Opposition in Old English Poems. BRILL, 1989.
警告：这些引文格式不一定是100％准确.