Cita APA

Counts, E. E. S. (1977). Second stage lensman. New York: Berkley Book.

Citación estilo Chicago

Counts, E.Edwin E.E."Doc" Smith. Second Stage Lensman. New York: Berkley Book, 1977.

Cita MLA

Counts, E.Edwin E.E."Doc" Smith. Second Stage Lensman. New York: Berkley Book, 1977.