Cita APA (7th ed.)

Osborn, M., Broadfoot, P., McNess, E., Planel, C., Ravn, B., & Triggs, P. (2003). A world of difference?: Comparing learners across Europe (1a. ed.). Open University Press.

Cita Chicago (17th ed.)

Osborn, Marilyn, Patricia Broadfoot, Elizabeth McNess, Claire Planel, Birte Ravn, i Pat Triggs. A World of Difference?: Comparing Learners Across Europe. 1a. ed. Berkshire: Open University Press, 2003.

Cita MLA (9th ed.)

Osborn, Marilyn, et al. A World of Difference?: Comparing Learners Across Europe. 1a. ed. Open University Press, 2003.