Cita APA (7a ed.)

Keane, L. (1991). Journeys on course: Workbook.

Cita Chicago Style (17a ed.)

Keane, Leila. Journeys on Course: Workbook. Harlow, 1991.

Cita MLA (9a ed.)

Keane, Leila. Journeys on Course: Workbook. 1991.