APA (7th ed.) Citation

MacKenna, R. W., & MacKenna, R. M. B. (1967). As shadows lengthen: The later essays of Robert W. MacKenna. Books for Libraries Press.

Chicago Style (17th ed.) Citation

MacKenna, Robert William, and R. M. B. MacKenna. As Shadows Lengthen: The Later Essays of Robert W. MacKenna. Freeport, N.Y.: Books for Libraries Press, 1967.

MLA (9th ed.) Citation

MacKenna, Robert William, and R. M. B. MacKenna. As Shadows Lengthen: The Later Essays of Robert W. MacKenna. Books for Libraries Press, 1967.