Cita APA (7a ed.)

Jespersen, O. (1960). Essentials of English grammar. G. Allen & Unwin.

Cita Chicago Style (17a ed.)

Jespersen, Otto. Essentials of English Grammar. London: G. Allen & Unwin, 1960.

Cita MLA (9a ed.)

Jespersen, Otto. Essentials of English Grammar. G. Allen & Unwin, 1960.