Cita APA (7th ed.)
Ashworth, J., & Clark, J. (1996). I-SPY: Activity book 1. University Press.
Cita Chicago (17th ed.)
Ashworth, Julie, i John Clark. I-SPY: Activity Book 1. Oxford: University Press, 1996.
Cita MLA (9th ed.)
Ashworth, Julie, i John Clark. I-SPY: Activity Book 1. University Press, 1996.
Atenció: Aquestes cites poden no estar 100% correctes.