Cita APA (7th ed.)

SAFFOLD, R. (1964). Slide rule. English Univ. Press.

Cita Chicago (17th ed.)

SAFFOLD, Robert. Slide Rule. London: English Univ. Press, 1964.

Cita MLA (9th ed.)

SAFFOLD, Robert. Slide Rule. English Univ. Press, 1964.