APA Edition Citation

A S Hornby & E C Parnwell. (1974). The Progressive English Dictionary.

Chicago Edition Citation

A S Hornby & E C Parnwell. The Progressive English Dictionary. Oxford University Press, 1974.

MLA Edition Citation

A S Hornby & E C Parnwell. The Progressive English Dictionary. 1974.

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