Cita APA (7a ed.)

Gorman, T., Purves, A., & Degenhart, R. (1988). The IEA study of written composition. Pergamon Press.

Cita Chicago Style (17a ed.)

Gorman, T.P., A.C Purves, y R.E Degenhart. The IEA Study of Written Composition. Oxford: Pergamon Press, 1988.

Cita MLA (9a ed.)

Gorman, T.P., et al. The IEA Study of Written Composition. Pergamon Press, 1988.