APA (7th ed.) Citation

Allen, R. L. (1972). English grammars and english grammar. Charles Scribner.

Chicago Style (17th ed.) Citation

Allen, Robert L. English Grammars and English Grammar. Nueva York: Charles Scribner, 1972.

MLA (9th ed.) Citation

Allen, Robert L. English Grammars and English Grammar. Charles Scribner, 1972.