APA

Richards J. C., Sandy C., . (2000). Passages. An Upper - Level Multi - Skills Course. New York: Cambridge University Press.

Chicago

Richards J C, Sandy C, . 2000. Passages. An Upper - Level Multi - Skills Course. New York: Cambridge University Press.

Harvard

Richards J. C., Sandy C., . (2000). Passages. An Upper - Level Multi - Skills Course. New York: Cambridge University Press.

MLA

Richards J C, Sandy C, . Passages. An Upper - Level Multi - Skills Course. New York: Cambridge University Press. 2000.