Walton , R. (1989). The Encyclopaedia of forms and precedents (5.). Butter worth London.
芝加哥风格引文Walton , Raymond. The Encyclopaedia of Forms and Precedents. 5. London: Butter worth London, 1989.
MLA引文Walton , Raymond. The Encyclopaedia of Forms and Precedents. 5. Butter worth London, 1989.
警告：这些引文格式不一定是100％准确.