Cita APA (7th ed.)
Vale, D., Mullaney, S., & Murphy, P. (1995). Story world: Big book 3 and 4. Heinemann.
Cita Chicago (17th ed.)
Vale, David, Stephen Mullaney, i Pat Murphy. Story World: Big Book 3 and 4. Oxford: Heinemann, 1995.
Cita MLA (9th ed.)
Vale, David, et al. Story World: Big Book 3 and 4. Heinemann, 1995.
Atenció: Aquestes cites poden no estar 100% correctes.