APA (7th ed.) Citation

Rayfield, R. E. (1977). Two experiments in computer analysis of newspaper prose: Readability assessment and automatic indexing. [publisher not identified].

Chicago Style (17th ed.) Citation

Rayfield, Robert E. Two Experiments in Computer Analysis of Newspaper Prose: Readability Assessment and Automatic Indexing. [Place of publication not identified]: [publisher not identified], 1977.

MLA (9th ed.) Citation

Rayfield, Robert E. Two Experiments in Computer Analysis of Newspaper Prose: Readability Assessment and Automatic Indexing. [publisher not identified], 1977.