Cita APA (7a ed.)

Jespersen, O. (1969). Essentials of English grammar. G. Allen and Unwin.

Cita Chicago Style (17a ed.)

Jespersen, Otto. Essentials of English Grammar. London: G. Allen and Unwin, 1969.

Cita MLA (9a ed.)

Jespersen, Otto. Essentials of English Grammar. G. Allen and Unwin, 1969.