Citazione APA

Richards, J. C., & Sandy, C. (1999). Passages: An upper-level multi-skills course : workbook 1. Cambridge ; New York: Cambridge University Press.

Stile di citazione Chicago

Richards, Jack C., e Chuck Sandy. Passages: An Upper-level Multi-skills Course : Workbook 1. Cambridge ; New York: Cambridge University Press, 1999.

Citazione MLA

Richards, Jack C., e Chuck Sandy. Passages: An Upper-level Multi-skills Course : Workbook 1. Cambridge ; New York: Cambridge University Press, 1999.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.