Day, A., & Harvet, J. M. (1994). Walford's guide to reference material: Social and historical sciences,philosophy and religion (6th ed.). Library association publishing.
芝加哥风格引文Day, Alan, 与 Joan M. Harvet. Walford's Guide to Reference Material: Social and Historical Sciences,philosophy and Religion. 6th ed. London: Library association publishing, 1994.
MLA引文Day, Alan, 与 Joan M. Harvet. Walford's Guide to Reference Material: Social and Historical Sciences,philosophy and Religion. 6th ed. Library association publishing, 1994.
警告：这些引文格式不一定是100％准确.