Haarman, L., Leech, P., & Murray, J. (1993). Reading skills for the social sciences (2a. ed.). Oxford University Press.
Cita Chicago (17th ed.)Haarman, Louann, Patrick Leech, i Janet Murray. Reading Skills for the Social Sciences. 2a. ed. Oxford: Oxford University Press, 1993.
Cita MLA (9th ed.)Haarman, Louann, et al. Reading Skills for the Social Sciences. 2a. ed. Oxford University Press, 1993.
Atenció: Aquestes cites poden no estar 100% correctes.