APA (7th ed.) Citation

MacKenzie, D. (1973). Postscript to a dead letter. Macmillan.

Chicago Style (17th ed.) Citation

MacKenzie, Donald. Postscript to a Dead Letter. London: Macmillan, 1973.

MLA (8th ed.) Citation

MacKenzie, Donald. Postscript to a Dead Letter. Macmillan, 1973.

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