APA (7th ed.) Citation

Smith, E. E. D. (1972). Children of the Lens: The sixth novel of the Lensman series. W.H. Allen.

Chicago Style (17th ed.) Citation

Smith, E. E. Doc. Children of the Lens: The Sixth Novel of the Lensman Series. London: W.H. Allen, 1972.

MLA (8th ed.) Citation

Smith, E. E. Doc. Children of the Lens: The Sixth Novel of the Lensman Series. W.H. Allen, 1972.