APA (7e ed.) Bronvermelding

Snodgrass, B. (1971). The slide rule (Rev. ed.). T. and A. Constable Ltd.

Chicago (17e ed.) Bronvermelding

Snodgrass, Burns. The Slide Rule. Rev. ed. Edinburgh: T. and A. Constable Ltd, 1971.

MLA (9e ed.) Bronvermelding

Snodgrass, Burns. The Slide Rule. Rev. ed. T. and A. Constable Ltd, 1971.