Παραπομπή APA

Gartside, L. (1982). Model business letters: A classified selection of modern business letters for use in schools and in business (3.). ELBS.

Παραπομπή Chicago Style

Gartside, L. Model Business Letters: A Classified Selection of Modern Business Letters for Use in Schools and in Business. 3. London: ELBS, 1982.

Παραπομπή MLA

Gartside, L. Model Business Letters: A Classified Selection of Modern Business Letters for Use in Schools and in Business. 3. ELBS, 1982.