Cita APA (7a ed.)

Ashby, P., & Campbell, R. (1979). Microform publishing. Butterworths.

Cita Chicago Style (17a ed.)

Ashby, Peter, y Robert Campbell. Microform Publishing. London ; Boston: Butterworths, 1979.

Cita MLA (9a ed.)

Ashby, Peter, y Robert Campbell. Microform Publishing. Butterworths, 1979.