Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

Crystal, David, i Derek Davy. Investigating English Style. [London]: Longmans, 1969.

Cita MLA (9th ed.)

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