Bird, R., & Paterson, R. (1999). de Bruijn Notation as a Nested Datatype.
芝加哥风格引文Bird, R., 与 R. Paterson. De Bruijn Notation as a Nested Datatype. 1999.
MLA引文Bird, R., 与 R. Paterson. De Bruijn Notation as a Nested Datatype. 1999.
警告：这些引文格式不一定是100％准确.