APA (7th ed.) Citation

Jespersen, O. (1961). A modern English grammar on historical principles. Allen & Unwin.

Chicago Style (17th ed.) Citation

Jespersen, Otto. A Modern English Grammar on Historical Principles. London: Allen & Unwin, 1961.

MLA (8th ed.) Citation

Jespersen, Otto. A Modern English Grammar on Historical Principles. Allen & Unwin, 1961.

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