Παραπομπή APA

Hill, R. H. C. (1993). The Wordsworth Dictionary of Difficult Words. Wordsworth Reference.

Παραπομπή Chicago Style

Hill, Robert H. Comp. The Wordsworth Dictionary of Difficult Words. Denmark: Wordsworth Reference, 1993.

Παραπομπή MLA

Hill, Robert H. Comp. The Wordsworth Dictionary of Difficult Words. Wordsworth Reference, 1993.