APA (7th ed.) Citation

Jespersen, O. (1987). Essentials of English grammar. University of Alabama Press.

Chicago Style (17th ed.) Citation

Jespersen, Otto. Essentials of English Grammar. Tuscaloosa [etc.]: University of Alabama Press, 1987.

MLA (9th ed.) Citation

Jespersen, Otto. Essentials of English Grammar. University of Alabama Press, 1987.

Warning: These citations may not always be 100% accurate.