Cita APA (7a ed.)

MacInnes, H. (1966). The double image. The Companion Book Club.

Cita Chicago Style (17a ed.)

MacInnes, Helen. The Double Image. Londres, Inglaterra: The Companion Book Club, 1966.

Cita MLA (9a ed.)

MacInnes, Helen. The Double Image. The Companion Book Club, 1966.