APA (7th ed.) Citation

Smith, E. E. D. (1972). Triplanetary: The first novel of the Lensman series. Panther.

Chicago Style (17th ed.) Citation

Smith, E. E. Doc. Triplanetary: The First Novel of the Lensman Series. London: Panther, 1972.

MLA (8th ed.) Citation

Smith, E. E. Doc. Triplanetary: The First Novel of the Lensman Series. Panther, 1972.