APA

Hopkins A., Potter J. (. a. )., . (1984). More work in progress : Course book. London: Addison wesley longman.

Chicago

Hopkins Andy, Potter Jocelyn (A author ), . 1984. More work in progress : Course book. London: Addison wesley longman.

Harvard

Hopkins A., Potter J. (. a. )., . (1984). More work in progress : Course book. London: Addison wesley longman.

MLA

Hopkins Andy, Potter Jocelyn (A author ), . More work in progress : Course book. London: Addison wesley longman. 1984.