Cita APA (7a ed.)

Harris, M., & Vincent, N. (1988). The romance languages. Helm.

Cita Chicago Style (17a ed.)

Harris, Martin, y Nigel Vincent. The Romance Languages. London [etc.]: Helm, 1988.

Cita MLA (9a ed.)

Harris, Martin, y Nigel Vincent. The Romance Languages. Helm, 1988.