Cita APA (7a ed.)

Hill, M., Schiffels, R., & Wittman, A. (1979). Patent documentation. Sweet & Maxwell.

Cita Chicago Style (17a ed.)

Hill, Michael, Rudolf Schiffels, y Alfred Wittman. Patent Documentation. London: Sweet & Maxwell, 1979.

Cita MLA (9a ed.)

Hill, Michael, et al. Patent Documentation. Sweet & Maxwell, 1979.