APA引文

(1987). Walford's guide to reference material (4th ed.). Library Association.

芝加哥风格引文

Walford's Guide to Reference Material. 4th ed. London: Library Association, 1987.

MLA引文

Walford's Guide to Reference Material. 4th ed. Library Association, 1987.

警告:这些引文格式不一定是100%准确.