Cita APA (7a ed.)

Brockie, G., Walsh, R., & Hugo, J. (1997). Focus on the past (One vol. ed., revised.). Gill & Macmillan.

Cita Chicago Style (17a ed.)

Brockie, Gerard, Raymond Walsh, y Joanne Hugo. Focus on the Past. One vol. ed., revised. Dublin: Gill & Macmillan, 1997.

Cita MLA (9a ed.)

Brockie, Gerard, et al. Focus on the Past. One vol. ed., revised. Gill & Macmillan, 1997.