Cita APA (7th ed.)
Lawday, C., Shipton, P., Ashworth, J., & Clark, J. (1998). I-SPY: Course book 3.
Cita Chicago (17th ed.)
Lawday, Cathy, Paul Shipton, Julie Ashworth, i John Clark. I-SPY: Course Book 3. Oxford, 1998.
Cita MLA (9th ed.)
Lawday, Cathy, et al. I-SPY: Course Book 3. 1998.
Atenció: Aquestes cites poden no estar 100% correctes.