APA (7th ed.) Citation

Jespersen, O. (1933). Essentials of English grammar (1. publ.). Allen & Unwin.

Chicago Style (17th ed.) Citation

Jespersen, Otto. Essentials of English Grammar. 1. publ. London: Allen & Unwin, 1933.

MLA (9th ed.) Citation

Jespersen, Otto. Essentials of English Grammar. 1. publ. Allen & Unwin, 1933.

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