APA Citation

Richards, & Long. (1977). Breakthrough: A Course in English Communication Practice (New-ed.). London: Longman.

Chicago Style Citation

Richards, and Long. Breakthrough: A Course in English Communication Practice. New-ed. London: Longman, 1977.

MLA Citation

Richards, and Long. Breakthrough: A Course in English Communication Practice. New-ed. London: Longman, 1977.

Warning: These citations may not always be 100% accurate.