Cita APA (7a ed.)

Queen, E. s. d. D. (1969). And on the eighth day. Penguin Books.

Cita Chicago Style (17a ed.)

Queen, Ellery seudónimo de Dannay. And on the Eighth Day. Middelesex: Penguin Books, 1969.

Cita MLA (8a ed.)

Queen, Ellery seudónimo de Dannay. And on the Eighth Day. Penguin Books, 1969.