Παραπομπή APA

Geerts, W. (1968). Working with a slide rule: :a programmed text. Oxford.

Παραπομπή Chicago Style

Geerts, W. Working with a Slide Rule: :a Programmed Text. Calcutta: Oxford, 1968.

Παραπομπή MLA

Geerts, W. Working with a Slide Rule: :a Programmed Text. Oxford, 1968.