APA Citatie

Richards, J. C., & Sandy, C. (1998). Passages: An upper-level multi-skills course : student's book 1. Cambridge ; New York: Cambridge University Press.

Chicago Style citaat

Richards, Jack C., en Chuck Sandy. Passages: An Upper-level Multi-skills Course : Student's Book 1. Cambridge ; New York: Cambridge University Press, 1998.

MLA citatie

Richards, Jack C., en Chuck Sandy. Passages: An Upper-level Multi-skills Course : Student's Book 1. Cambridge ; New York: Cambridge University Press, 1998.