APA (7th ed.) Citation

Treble, H. A. (1939). An ABC of english usage. (1a. ed.). Oxford.

Chicago Style (17th ed.) Citation

Treble, H. A. An ABC of English Usage. 1a. ed. Londres: Oxford, 1939.

MLA (9th ed.) Citation

Treble, H. A. An ABC of English Usage. 1a. ed. Oxford, 1939.