APA aipamena

Crystal, D., & Davy, D. (1969). Investigating English style. Longmans.

Chicago Style aipamena

Crystal, David, and Derek Davy. Investigating English Style. Harlow: Longmans, 1969.

MLA aipamena

Crystal, David, and Derek Davy. Investigating English Style. Longmans, 1969.