Cita APA (7a ed.)

Spencer, D. H. (2006). Macmillan Secondary Course: 1. Macmillan Education.

Cita Chicago Style (17a ed.)

Spencer, D. H. Macmillan Secondary Course: 1. Oxford: Macmillan Education, 2006.

Cita MLA (9a ed.)

Spencer, D. H. Macmillan Secondary Course: 1. Macmillan Education, 2006.